Questions on Algebra: Probability and statistics answered by real tutors!

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Question 571389: The data set represents the income levels of the members of a country club. Estimate the probability that a randomly selected member earns at least $98,000.
112,000 126,000 90,000 133,000 94,000
112,000 98,000 82,000 147,000 182,000
86,000 105,000 140,000 94,000 126,000
119,000 98,000 154,000 78,000 119,000

Click here to see answer by stanbon(48516) About Me 

Question 571407: Ted performed an experiment which he placed 10 colored marbles into a bag. He then reached in,picked a marble,recorded his color,and replaced it in the bag.He did this a 100 times,and his results were; brown 29,gray 42,green 10,and purple 19. What was the experimental probability of picking a gray marble? 1/42,21/100,2/5,or 21/50.Also what was the theoretical probability of choosing a brown marble? 1/10,2/9,3/10,or 1/2.
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Question 571283: How do you find the smallest power of 0.917 that yields a value less than 0.10. The answer book says 27 (rounded up). How did they get that?
Click here to see answer by lwsshak3(2915) About Me 
Question 571283: How do you find the smallest power of 0.917 that yields a value less than 0.10. The answer book says 27 (rounded up). How did they get that?
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Question 571283: How do you find the smallest power of 0.917 that yields a value less than 0.10. The answer book says 27 (rounded up). How did they get that?
Click here to see answer by scott8148(5879) About Me 

Question 570867: A company brings a new product to market:
The probability of loosing $1,000,000 is 10%
The probability of loosing $500,000 is 20%
The probability of breaking even is 20%
The probability of making $500,000 profit is 20%
The probability of making $2,000,000 profit is 30%
what is the expected profit?
I can calculate this ((2,000,000*.3)+(500000*.2)) - ((1,000,000*.1)+(500,000*.2))
yields 700,000-200000 = $500,000 expected profit. but im not sure how to handle the 20% probability of breaking even, 0 * 20% = 0? how is this factored in to my calculations?

Click here to see answer by richard1234(4789) About Me 

Question 570976: Suppose k identical boxes contained n balls numbered one through n. One ball is drawn from
each box. What is the probability that m is the largest number drawn?

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Question 571054: You are asked by the owner of the Starshine Motel to develop a customer satisfaction survey to determine the percentage of customers who are dissatisfied with service. In the past year, 20,000 customers were serviced. She desires a 95% level of confidence with an allowable statistical error of +/- 0.02. From past estimates, the manager believes that about 4% of customers have expressed dissatisfaction. What sample size should you use for this survey?
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Question 571022: The spinner below is spun twice. Find the probablity of the outcome numbers 1-8. Find the P(a number less than 3 or a number greater than 5)
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Question 570991: Hello. Guys, I really need your help on this one please
Below are the home states of 16 college professors..

Florida Indiana Pennsylvania Arizona Georgia
Florida Tennessee Texas Kansas Arizona
Texas Florida Tennessee Arizona Texas
Indiana


a)Make a frequency table using these 8 states:
Arizona Kansas
Florida Pennsylvania
Georgia Tennessee
Indiana Texas

b)What is (are) the mode(s)?
c)Does it make sense to talk about the average for this data? Why or why not?

Click here to see answer by jim_thompson5910(21667) About Me 
Question 570991: Hello. Guys, I really need your help on this one please
Below are the home states of 16 college professors..

Florida Indiana Pennsylvania Arizona Georgia
Florida Tennessee Texas Kansas Arizona
Texas Florida Tennessee Arizona Texas
Indiana


a)Make a frequency table using these 8 states:
Arizona Kansas
Florida Pennsylvania
Georgia Tennessee
Indiana Texas

b)What is (are) the mode(s)?
c)Does it make sense to talk about the average for this data? Why or why not?

Click here to see answer by Edwin McCravy(6932) About Me 

Question 570982: what are 5 multiple choice about basketball

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Question 570980: Provide a written description of the complement of the given event.
Of the thirteen different women Calvin asks for a date, at least one of them accepts.

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Question 570941: Question:
A single dice is rolled 2 times. What is the probability that the next roll will produce a number less than 3?

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Question 570978: if an apple is hanging from a string and 3 flies land on it, find the probability that all 3 are on points that are within the same hemisphere
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Question 570967: The product of 3! and 4! is
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Question 570955: suppose A and b are events such that P(A)=1/3, P(B)= 1/3, and P(Aor B)=1/2. complete parts (a) and (b) below.
a. are events A and B mutually exclusive ? explain your answer.
b. determine P(A &B).
P(A& B) = ?

Click here to see answer by jim_thompson5910(21667) About Me 

Question 570953: Any help on a true false question these are very tricky for me.
1) A regression line was calculated as y = 9.7 - 3.2x. The slope of this line is -3.2 True or False
Eric

Click here to see answer by jim_thompson5910(21667) About Me 

Question 570950: I am having a difficult time finding the answer to this question any help would be greatly appreciated.

1) A correlation coefficient of 0.96 would mean that the values of x increase as the values of y decrease. True or False
Eric

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Question 570879: if 8 students have blue eyes and 4 has brown, whats the percentage of blue eyes
Click here to see answer by maa.veera@gmail.com(3) About Me 

Question 570845: Find the probability that when you roll two dice, the sum of the outcomes is greater than 6 or you get a 5 on one of the dice?

Thank you

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Question 570854: If you toss a coin and randomly select a number from 0-9, what is the probality of getting tails and selecting a 3
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Question 570661: what is the probability of a person is between the ages of 40 and 49?
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Question 570761: Determine the sample size necessary to estimate a population proportion to within .03 with 90% confidence assuming you have no knowledge of the approximate value of the sample proportion.
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Question 570682: A multiple choice quiz consists of five questions, each with three possible answers of which only one is correct. a student passes the quiz if three of more correct answer are obtained. what is the probability of a student passing the quiz by randomly guessing the answer to each question
Click here to see answer by stanbon(48516) About Me 

Question 570689: A standard poker deck of cards contains 52 cards, of which four are queens. Suppose two cards are drawn sequentially, so that one random circumstance is the result of the first card drawn and the second random circumstance is the result of the second card drawn. Find the probability that the first card is a queen and the second card is not a queen. (Enter your answer as a fraction.)


Click here to see answer by stanbon(48516) About Me 

Question 570240: Below are the home states of 21 college professors.
New Jersey Ohio Michigan South Carolina Nebraska
South Carolina Ohio South Carolina Pennsylvania Michigan
Georgia New Jersey Wisconsin Georgia Ohio
Florida Georgia New Jersey South Carolina Wisconsin
Pennsylvania
i. Make a frequency table using these 9 states:
Florida
Georgia
Michigan
Nebraska
New Jersey
Ohio
Pennsylvania
South Carolina
Wisconsin
ii. What is (are) the mode(s)?
iii. Does it make sense to talk about the average for this data? Why or why not?
iv. Using your frequency table draw a pie chart to display the distribution of home states by filling in the following table:
Home State Frequency Percentage of Measure of Central
total Angle (in degrees)
Florida
Georgia
Michigan
Nebraska
New Jersey
Ohio
Pennsylvania
South Carolina
Wisconsin

Click here to see answer by jim_thompson5910(21667) About Me 

Question 570023: Amy has a quiz on which she has to answer any 3 out of 5 questions. If she is equally well versed on all questions and chooses at random, what is the probability that 1 is not chosen?
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Question 570033: what is the value of determinent if entries in any two rows of the determinent are crrespondingly proportional
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Question 569955: The Thomas Supply Company, Inc. is a distributor of gas-powered generators. As with any business, the length of time customers take to pay their invoices is important. Listed below, arranged from smallest to largest, is the time, in days, for a sample of The Thomas Supply Company, Inc. invoices.
13 13 13 20 26 29 31 33 34 34 35 35 36 37 38 41 41 41 45 45 47 47 48
52 54 56 56 62 67 82


(a) Determine the second decile and the eighth decile.

D2 =
D8 =

(b) Determine the 67th percentile.

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Question 569959: Suppose the Internal Revenue Service is studying the category of charitable contributions. A sample of 32 returns is selected from young couples between the ages of 20 and 35 who had an adjusted gross income of more than $100,000. Of these 32 returns 7 had charitable contributions of more than $1,000. Suppose 6 of these returns are selected for a comprehensive audit.
(a)What is the probability exactly one of the six audited had a charitable deduction of more than $1,000?
(b)What is the probability at least one of the audited returns had a charitable contribution of more than $1,000?

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Question 569969: a test has 2 questions with 5 multiple choice answers per questions. Only 1 answer is correct. What is the probability if answering both questions correct if you guess.
Click here to see answer by jim_thompson5910(21667) About Me 

Question 569759: dwayne forgot his 4 digit pin number for his bank account. he knows that all four digits are different, and that the two middle numbers are 6 and 8
Click here to see answer by Alan3354(21555) About Me 

Question 569722: Suppose a consonant of the alphabet is chosen at random and removed. Then a different consonant is chosen. Are the events in the experiment dependent or independent?

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Question 569692: another friends ask you to explain how to tell if two events are dependent or independent ? how would you reply?
Click here to see answer by JBarnum(1826) About Me 

Question 569652: 3 cards are drawn from 12 face cards of ordinary deck of 52 playing cards. Let x be the number of kings and y be the number of jacks. Find the joint probability distribution of x and y.

Click here to see answer by AnlytcPhil(1116) About Me 

Question 158200: Scott Equipment Organization is investigating the use of various combinations of short term and long-term debt in financing its assets. Assume that the organization has decided to employ $30 million in current assets, along with $35 in fixed assets, in the operations next year. Given the level of current assets, anticipated sales adn Earnings Before Interest and Taxes (EBIT) for next year are $60 million and $6 million, respectively. The organizations income tax rate is 40%; Stockholders equity will be used to finance $40 million of its assets, with the remainder being financed by short-term and long-term debt. Scott's is considering implementing one of the following financing policies:
Amount of Short-Term Debt
Financial Policy In Mil. LTD% STD%
Aggressive (large amount) $24 8.5 5.5
Moderate (moderate amount) 18 8.0 5.0
Conservative (small amount) 12 7.5 4.5
A) Determine the following for each of the financing policies:
1) Expected rate of return on stockholders equity
2) Net working capital position
3) Current ratio
B) Evaluate the profitability versus risk trade-offs of these three
policies. Would you rate each one "low", "medium", or "high"
with respect to profitability? Would you rate
each "one"low", "medium", or "high" with respect to risk?

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Question 569239: What is the probability that the first two letters of a 3 letter license plate are consonants followed by a vowel?
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Question 569104: Could someone please help me write an equation to describe the exponential function as y=ab^x
The base is 5. The graph passes through the point(1,2)
Thank you for taking the time to help me!

Click here to see answer by Alan3354(21555) About Me 

Question 568992: What is the probability that a yellow marble is drawn at random from a bag containing 3 white, 2 yellow, 1 green, and 4 blue marbles. (Example of how to enter answer: if the answer was two thirds you would enter 2/3)
Click here to see answer by htmentor(580) About Me 

Question 568942: In how many ways can double game of tennis be arranged from eight boys and four girls if each side must have one boy and one girl?
Thanks!

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Question 568882: The rates of on-time flights for commercial jets are continuously tracked by the U.S. Department of Transportation. Recently, Southwest Air had the best reate with 80% of its flights arriving on time. A test is conducted by randomly selecting Southwest flights and observing whether they arrive on time.
Find the probability that exactly flights arrive on time

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Question 568776: If 4n=3.60, which is the value of the n. Exsamples A.0.09 B.0.9 C.9 D.90.

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Question 568857: a bag contains 6 cherry, 3 orange, and 2 lemon candies. you reach in and take 3 pieces of candy at random. whats the probability that you have one candy of each favor.
Click here to see answer by stanbon(48516) About Me 

Question 568205: if the correlation between x and y is r= 30 and ssy =100, how much of the y variability is predicted by the regression equation? ss regression = ponts.
a.9
b. 30
c. 70
d. 91

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Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710, 10711..10755, 10756..10800, 10801..10845, 10846..10890, 10891..10935, 10936..10980, 10981..11025, 11026..11070, 11071..11115, 11116..11160, 11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 14356..14400, 14401..14445, 14446..14490, 14491..14535, 14536..14580, 14581..14625, 14626..14670, 14671..14715, 14716..14760, 14761..14805, 14806..14850, 14851..14895, 14896..14940, 14941..14985, 14986..15030, 15031..15075, 15076..15120, 15121..15165, 15166..15210, 15211..15255, 15256..15300, 15301..15345, 15346..15390, 15391..15435, 15436..15480, 15481..15525, 15526..15570, 15571..15615, 15616..15660, 15661..15705, 15706..15750, 15751..15795, 15796..15840, 15841..15885, 15886..15930, 15931..15975, 15976..16020, 16021..16065, 16066..16110, 16111..16155, 16156..16200, 16201..16245, 16246..16290, 16291..16335, 16336..16380, 16381..16425, 16426..16470, 16471..16515