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

Algebra -> Algebra -> Probability-and-statistics -> Questions on Algebra: Probability and statistics answered by real tutors! Log On

Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help!
Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations!

Algebra: Probability and statistics

Solvers

Lessons

Problems, free tutors

Quiz

In Depth

Tutors Answer Your Questions about Probability-and-statistics (FREE)

Question 168921: Find C(18,1)
Click here to see answer by nerdybill(2446)

Question 168858: (a) What is the probability that a randomly selected female student majors in finance? Round your answer to decimal places.
(b) What is the probability that a randomly selected finance major is female? Round your answer to decimal places.

Click here to see answer by Fombitz(2113)

Question 169012: An automobile dealer wants to construct a pie graph to represent types of cars that were sold in Jule. He sold 72 cars, 16 of which were convertibles. The convertibles will represent how many degrees in the circle?
60
80
100
50

Click here to see answer by nerdybill(2446)

Question 169011: If the letters A, B, C, D, E, and F are used in a five-letter code, how many different codes are possible if repetitions are not permitted?
a) 625
b) 720
c) 7776
d) 1296

I am completely confused.
Click here to see answer by Alan3354(6059)

Question 169079This question is from textbook fundamentals of algebraic modeling

: I have completely gone blank on these two questions. I looked back at my notes and evidentally I didn't take good notes because I still don't understand.
I provided all of the book information above so hopefully I can get very quick solution.This question is from textbook fundamentals of algebraic modeling

Click here to see answer by user_dude2008(715)

Question 169085: What is the range of values for a coefficient of correlation?
Click here to see answer by user_dude2008(715)

Question 169083: If r = 1.00, what inferences can be made?
Click here to see answer by user_dude2008(715)

Question 169102: If you have 5 children what is the probability that the 3 eldest are boys?
Click here to see answer by 303795(562)

Question 169228: I have worked out this problem, but it doesn't look right to me. Could you see what I have done wrong please.
directions: Evaluate C(12,10)
C(12,10)=12!/(12-10)!
C(12,10)=12!/2!
C(12,10)=(1*2*3*4*5*6*7*8*9*10*11*12)/(1*2)
C(12,10)=3*1*5*6*7*8*9*10*11*12
C(12,10)=239,500,800
Will you please show me if I did something wrong. This looks like to big of a number
Thank you
Click here to see answer by nerdybill(2446)

Question 169225: I have two questions. Will you please help
1. A scout troop will prepare trail mix for their next hike. They have decided to mix one type of nut, one type of dried fruit, and one type of granola. The local store carries 8 types of nuts, 6 types of dried fruit, and 5 types of granola. How many different trail mixes are possible.
2. Students are given a list of ten vocabulary words to learn. In how many ways could four of the words be listed on a test?
I must show my work. Will you please help.
Thank you
Click here to see answer by checkley77(7035)

Question 169284: We selected 3 seeds out of a bag. The bag contains 6 seeds for yellow flowers, 4 red and seven white.
What's the probability that the 3 seeds grow white flowers?
What's the probability that the 3 seeds grow same colored flowers?
Click here to see answer by checkley77(7035)

Question 169297: The odds against an event are 9:8. Find the probability that the event will occur.
Click here to see answer by England-Gal(1)

Question 169280: In the New England Lottery you have to get right 8 numbers from 0 to 50 (where the order does matter) What's tha probability of winning tha big prize if you play $5?
Click here to see answer by checkley77(7035)

Question 169452: In how many ways can 8 people be seated in a row?
Click here to see answer by vleith(1977)

Question 169450: Find all subsets of the set { 2, 5, 8 }
Click here to see answer by Mathtut(3670)

Question 169456: If you roll a single die what is the probability that you roll a number less than or equal to four?
Click here to see answer by vleith(1977)

Question 169458: Question #1: A container contains THREE RED, FIVE WHITE and EIGHT GREEN balls.
You are to draw a ball put it back and draw another ball.
What is the probability of getting TWO green balls?
Question #2: Using the same container as in problem # 9 above and selecting one ball followed by selecting another but NOT replacing the first ball what is the probability of selecting
TWO GREEN BALLS?

Click here to see answer by Mathtut(3670)

Question 169457: A fair coin is tossed TWICE. What is the probability that you get at least ONE head?
Click here to see answer by Mathtut(3670)

Question 169454: How many different committees of 5 people can be formed from a pool of 8 people?
Click here to see answer by Alan3354(6059)

Question 169640: if Sam can do a job in 4 days that Lisa can do in 6 days and Tom can do in 2 day how long will the job take if Sam,Lisa and Tom together to complete it.
Click here to see answer by Mathtut(3670)

Question 169548: Three cards are drawn from a deck without replacement. The number of aces is counted. The expected value of the random variable in the experiment is:
A. 1
B. 1.0134
C. .2308
D. .2174
E. None of the above
Click here to see answer by Edwin McCravy(2920)

Question 169655: Suppose you roll a number cube. What is p(even number)?
Please show work.
Thank you so much.
Click here to see answer by Fombitz(2113)

Question 169753: Help please.
Two cards are drawn from a standard deck of cards. Find the probability that a king or a red card is drawn.
I have to show my work to get credit and don't know how to do this.
Thanks

Click here to see answer by checkley77(7035)

Question 169754: Can you please show me how to do these two questions.
1. The time a group of high school students arrive home from school each day was found to be normally distributed. The mean time was 3:15 PM and the times had a standard deviation of 15 minutes. What is the probability that a student chosen at random arrives home from school before 2:30 PM?
2. During a clothing sale, 1/4 of the store merchandise is reduced in price. Find the probability that 3 of 5 randomly-selected shirts have reduced prices.
I have to show all my work. Will you please help me.
Thank you
Click here to see answer by stanbon(26259)

Question 169751: Will someone please help me.
1. A red die and a blue die are tossed. What is the probability that the red die shows an odd number and the blue die shows a 1 or 2?
2. From a group of 6 men and 4 women, a committee of 3 is to be selected at random. Find P(at least 2 women).
I must show all my work and don't know how to do this or where to start.
Thank you so much.
Click here to see answer by stanbon(26259)

Question 169479: Let f(n) = the number of zeros at the end of n! when n! is multiplied out.
Find:
f(12)
f(34)
Click here to see answer by stanbon(26259)

Question 169451: Given A = { 2, 4, 8 , 9 }, B = { 5. 8. 9 }, C = { 8, 11, 12, 17 } AND Universal Set U = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17}
find
a) A U C
b) the intersection of A and B
c) the complement
d) B U A U C

Click here to see answer by chiefman(11)

Question 169882: A box contains 74 brass washer, 86 steel washers and 40 aluminium washers. Three washers are drawn at random from the box without replacement.
a) Determine the probability that all three are steel washers.
b) Determine the probability that there are no aluminium washers drawn, when three washers are drawn at random from the box without replacement.
c) Find the probability that there are two brass washers and either a steel or an aluminium washer when three are drawn at random, without replacement.
Click here to see answer by stanbon(26259)

Question 169543This question is from textbook Bridges to Algebra and Geometry
: 5/2=y+8/y-4This question is from textbook Bridges to Algebra and Geometry

Click here to see answer by stanbon(26259)

Question 169455: a) Find P( 8,5)
b) Find C( 8,5)

Click here to see answer by Edwin McCravy(2920)

Question 170057: a baseball player with battling average of .300 comes to bat. what are the odds in favor of the player getting a hit
Click here to see answer by checkley77(7035)

Question 170058: Region 1995 1997 2000
Northe 51.4 51.6 53.6
Midwest 61.8 62.5 64.4
South 91.8 94.2 100.2
West 57.7 59.4 63.2
find probability that a US resident selected random satisfy
a.lived in west in 1997
b.lived in midwest in 1995
c.lived in northe or midwest in 1997
d.what are the odds that a randomly selected U.S resident in 2000 was not from the south.
Click here to see answer by checkley77(7035)

Question 170361This question is from textbook Applied Statistics in Business and Economics
: I need some assistance with this question, I don't think it the process to answer it as I am making it to be so I could use an answer to compare to. Also, my computer with Excel to use the statistics part of the program is broken so I am doing everything long hand. Thank you for your help.
Question:
In a bumper test, three types of autos were deliberately crashed into a barrier at 5 mph, and the resulting damage (in dollars) was estimated. Five test vehichles of each type were crashed, with the results shown below. Research question: Are the mean crash damages the same for these three vehicles?
Goliath 1600, 760, 880, 1950, 1220
Varmint 1290, 1400, 1390, 1850, 950
Weasel 1090, 2100, 1830, 1250, 1920

I calucated the mean for each car type, each mean is different, but I am not sure if the question is really asking for more than this. For the Goliath I got a mean of 1062, Varmint 1376, Weasel 1638. Thanks for your help.This question is from textbook Applied Statistics in Business and Economics

Click here to see answer by Earlsdon(4898)

Question 170394: This is bothering me, I answered a math problem, This one
.
Bill has been given a 20 question mulitple choice test. He hasnt attended class recently, and there are 5 answers to each question, but only one is correct...what is the probability that he will answer more than five questions on the test correctly?..explain your answer
.
I think the answer is , because you multiply the probability of getting one right, and multiply it 6 times, or
.
Am I right?
Click here to see answer by stanbon(26259)

Question 170425: Solve the problem.
Five cards are drawn at random from an ordinary deck of 52 cards. In how many ways is it possible to draw all black cards?
a. 32,890
b. 263,120
c. 65,780
d. 131,560
Click here to see answer by jim_thompson5910(13787)

Question 170523: You randomly select one card from a deck of 52 cards. Find the probabilty of selecting an ace or a 8?
Click here to see answer by Mathtut(3670)

Question 170523: You randomly select one card from a deck of 52 cards. Find the probabilty of selecting an ace or a 8?
Click here to see answer by stanbon(26259)

Question 170522: You randomly select one card from a deck of 52 cards. Find the probabilty of selecting an ace or a 6?
Click here to see answer by Mathtut(3670)

Question 170519: if a single die is rolled find the odds against getting a number less than 4
Click here to see answer by Mathtut(3670)

Question 170632This question is from textbook Algebra structure and method book one
: Find the dimensions of a rectangle whose perimeter is 46m and whose area is 126m^2.This question is from textbook Algebra structure and method book one

Click here to see answer by checkley77(7035)

Question 170645This question is from textbook
: At Ajax Spring Water, a half-liter bottle of soft drink is supposed to contain a mean of 520 ml. The filling process follows a normal distribution with a known process standard deviation of 4 ml. (a) Which sampling distribution would you use if random samples of 10 bottles are to be weighed? Why? (b) Set up hypotheses and a two-tailed decision rule for the correct mean using the 5 percent level of significance. (c) If a sample of 16 bottles shows a mean fill of 515 ml, does this contradict the hypothesis that the true mean is 520 ml?
This question is from textbook

Click here to see answer by stanbon(26259)

Question 170658This question is from textbook
: Ages for the 2005 Boston Red Sox pitchers are shown below. (a) Assuming this is a random sample of major league pitchers, at the 5 percent level of significance does this sample show that the true mean age of all American League pitchers is over 30 years? State your hypotheses and decision rule and show all work. (b) If there is a difference, is it important? (c) Find the p-value and interpret it.
Ages of Boston Red Sox Pitchers, October 2005
Arroyo 28 Foulke 33 Mantei 32
Timlin 39 Clement 31 Gonzalez 30
Miller 29 Wakefield 39 Embree 35
Halama 33 Myers 36 Wells 42

This question is from textbook

Click here to see answer by stanbon(26259)

Question 170988: According to a National data it was found that 55% of male students live at home. In a random sample of 200 students conducted in a college, what is the probability that the survey will result that at least 130 students are living at home.
Click here to see answer by stanbon(26259)

Question 170989: It is known that 70% of Democrats like music. What is the probability that in a random sample of 50 Democrats, only 30 like music.
Click here to see answer by stanbon(26259)

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