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

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

Question 51079: You are a day trader on the stock exchange and you have invested all of your life savings in a portfolio containing 6 stocks. After dwelling on the risks involved in your investments, you have come to the conclusion that if at least half of the stock in you portfolio are profitable, your investment wil be a success.
Based on the emprical data available from the historical records of the stock exchange you beleive that the probability of a stock being profitable is 0.39. Assuming that the profitability of each stock is independant of all the other stocks, CALCULATE THE PROBABILITY (S) THAT YOUR INVESTMENT IS A SUCCESS.
THANK YOU
Click here to see answer by venugopalramana(3286)

Question 51078: A Financial Analysis has been studying the Mean Corporation and has decided that the probability that the company's stock price will go up on next monday is 0.4, the probability that the stock price will go up on tuesday is 0.6 and the probability that the stock price will go up on BOTH days is 0.2. Assume that on each day the stock price will either increase or decrease.
A) Find the probability that the stock price will go up on Monday but not on Tuesday.
B) Find the probability that the stock price will go up on tuesday but not on monday.
THANK YOU
Click here to see answer by venugopalramana(3286)

Question 51190: please help
find all solutions:
|2x-1|=5
thanks a lot
Click here to see answer by THANApHD(104)

Question 51021: solve the equation:
|2x-1|=5
thanks a bunch!
Click here to see answer by rchill(405)

Question 51610: solve the quadratic equation:

thanks a lot
Click here to see answer by rchill(405)

Question 51617: solve for the indicated varible:
investment at compound intrest
solve for P: A=1/2bh
thanks a lot!
Click here to see answer by checkley71(8403)

Question 51605: solve the equation:
2(x+5)-7=3(x-2)
thanks a lot
Click here to see answer by rchill(405)

Question 51607: solve the equation:
6[x-(2x+3)]=5(1-x)-1
thanks a lot
Click here to see answer by checkley71(8403)

Question 51604: solve the equation:
8x-5=3x+10
thanks a lot
Click here to see answer by rchill(405)

Question 51609: find the x and y intercepts

thanks a lot
Click here to see answer by rchill(405)

Question 51702: Two of the cylinders in an eight-cylinder car are defective and need to be replaced. If two cylinders are selected at random, what is the probability that
a. both defective cylinders are selected?
b. no defective cylinder is selected?
c. at least one defective cylinder is selected?

Click here to see answer by venugopalramana(3286)

Question 51704: The number of song requests a radio station receives per day is indicated in the table below. construct a graph for this data.
x 8 9 10 11 12
0.21 0.31 0.16 0.14 0.18
I'm not sure if I can graph with the bottom numbers or if I have to use the formula n*p and then graph....the book doesn't have a good example. Thanks for your help
Click here to see answer by Edwin McCravy(8999)

Question 51701: The population change between 1990 and 2000 for several small cities are shown below.
City Population Change (number of residents)
Chattanooga 3083
Collegedale 1466
East Ridge -461
Lakeside 1113
Ridgeside -11
Signal Mountain 395
Soddy-Daisy 3290
Walden 437
For the above sample, determine the following measures.
a. The mean
c. The standard deviation
d. The median

Click here to see answer by Grilly-O(3)

Question 51759: the probablity of receving a passing grade on a biology test is 80%. what are the odds of a student in the class receiving a failing grade?
thanks!
aloha!
Click here to see answer by Frank 504(3)

Question 51775: at 5:00 am the number of visitors in the eggsactly breakfast place is 13. at 6:00 am there are 21 visitors and at 7:00 there are 29. if this pattern continues how many visitors will there be at 8:00 am?
thanks for your time!
Click here to see answer by Nate(3500)

Question 51774: find the tenth term in the sequance:
13,17,21,25....
thanks for your time!
Click here to see answer by Nate(3500)

Question 51773: a bag contains three blue marbles and six red marbles. what is the probabilty of drawing a red marble then another red marble then a blue marble if the marble is replaced after each draw?
thanks for your time!
Click here to see answer by Nate(3500)

Question 51771: evaluate:
sin-1(cos pie/6)
thanks for your time!
Click here to see answer by Nate(3500)

Question 51770: solve triangle ABC given that a=13 b=14 and c=1. round to the nearest tenth.
thanks for your time!
Click here to see answer by Nate(3500)

Question 51768: evaluate:
sin(-pie/6)
thanks!
aloha!
Click here to see answer by stanbon(57984)

Question 51769: given triangle ABC with a=10 A=13 degrees B=26 degrees what is the lenght of c?
thanks!
aloha!
Click here to see answer by Nate(3500)

Question 51763: convert 5pie/6 to degrees
thanks!
aloha!
Click here to see answer by Nate(3500)

Question 51749: find one geometric mean between 4 and 16.
thanks i hope you can help!
Click here to see answer by Nate(3500)

Question 51753: how many diffrent ways can four cars in a train be arranged?
thank you so much!
:)
Click here to see answer by stanbon(57984)

Question 51756: a coin purse contains 3 quarters 6 dimes 2 nickles and 4 pennies. what is the probablity of randomly selecting a dime?
thank you so much!
:)
Click here to see answer by stanbon(57984)

Question 51754: elven people are entered in a race. if there are no ties, how many ways can the first three places come out?
thank you so much!
:)
Click here to see answer by venugopalramana(3286)

Question 51746: find the sum of the first 19 terms of the arithmetic series in which a1=2 and d=4.
thanks i hope you can help!
Click here to see answer by venugopalramana(3286)

Question 51745: find two arithmetic means between 5 and -4.
thanks i hope you can help!
Click here to see answer by venugopalramana(3286)

Question 51748: give the first four terms of the geometric sequance in which a1=6 and r=4.
thanks i hope you can help!
Click here to see answer by venugopalramana(3286)

Question 51751: expand:
(2m+n)^5
thank you so much!
:)
Click here to see answer by venugopalramana(3286)

Question 51750: expand:
(2m+n)^5
thank you so much!
:)
Click here to see answer by venugopalramana(3286)

Question 51747: find the sixth term of geometric sequance if a1=7 and r=5.
thanks i hope you can help!
Click here to see answer by venugopalramana(3286)

Question 51744: for the following arithmetic sequence, find the fourteenth term and find n if an=22:
2,3,4,5...
thanks i hope you can help!
Click here to see answer by venugopalramana(3286)

Question 51901: What is the probability that a number cube with six faces numbered 1 to 6 will land with the number 5 face up?
Click here to see answer by funmath(2925)

Question 51957: a dice is rolled. what is the probability of rolling a number less than 4 or a 7?
thanks a lot i hope you can help me solve this
Click here to see answer by Nate(3500)

Question 51959: large earthquakes with a magnitude greater that 6.0 occur rarely but smaller earthquakes are quite common. the following measurements were recorded in one month for a country:
1.7,2.5,3.1,2.1,2.5,1.2,3.3,2.5,2.0,1.8,1.9,3.0.
find the mean, median, and mode of the data.
is the mean representative of the data?
thanks a lot i really hope you can help me solve this
Click here to see answer by Nate(3500)

Question 52377: help! fast
a box contains two coins. one coin is heads on both sides the other is heads on one side and tails on the other. one coin is selectled from the box at random and face of side is observed.if the face os heads what is the prbability tat the other side is heads.
Click here to see answer by rapaljer(4667)

Question 52374: a box containa two coins. one coin is heads on both sides, and the other is heads on one side and tails on the other. one coin is selected from the box at random and face of one side is observed,. if the face is heads, what is the probablity that the othersie is heads?
Click here to see answer by rapaljer(4667)

Question 52388:

Select a card from the partial deck. What is the probability that the card will be red?
Select a card from the partial deck. What is the probability that this card will NOT be a face card?
Select a card from the remaining deck. Place the card back in the deck. Select another card. What is the probability that both cards will be black?
Select a card from the remaining deck. Do NOT replace the card. Select another card. What is the probability that a red 3 is selected and a face card is selected?
Thanks a bunch.

Click here to see answer by checkley71(8403)

Question 52387:
These are the Actions
How many ways are there of selecting one of each face card from the pile?
How many ways are there of selecting the queen of clubs, then the king of diamonds, and then the jack of hearts from the pile?
How many ways are there of selecting three of the same face cards (i.e., 3 jacks, 3 queens, or 3 kings) from the pile?
This is what I need to know Derivation and solution Combination or permutation Why
Thanks for you help

Click here to see answer by stanbon(57984)

Question 51964: cedric wants to buy one of four diffrent kinds of new shoes. each brand of shoe is avalible in two colors, black and white. how many diffrent shoe choices does cedric have?
i hope you can help
thanks a bunch!
Click here to see answer by stanbon(57984)

Question 52871: solve the quadratic equation:
(x+3)^2=81
please help thanks
Click here to see answer by funmath(2925)

Question 52869: solve the equation if possible:
1/x+2/x-5=0
please help thanks
Click here to see answer by funmath(2925)

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, 16516..16560, 16561..16605, 16606..16650, 16651..16695, 16696..16740, 16741..16785, 16786..16830, 16831..16875, 16876..16920, 16921..16965, 16966..17010, 17011..17055, 17056..17100, 17101..17145, 17146..17190, 17191..17235, 17236..17280, 17281..17325, 17326..17370, 17371..17415, 17416..17460, 17461..17505, 17506..17550, 17551..17595, 17596..17640, 17641..17685, 17686..17730, 17731..17775, 17776..17820, 17821..17865, 17866..17910, 17911..17955, 17956..18000, 18001..18045, 18046..18090, 18091..18135, 18136..18180, 18181..18225, 18226..18270, 18271..18315, 18316..18360, 18361..18405, 18406..18450, 18451..18495, 18496..18540, 18541..18585, 18586..18630, 18631..18675, 18676..18720, 18721..18765, 18766..18810, 18811..18855, 18856..18900, 18901..18945, 18946..18990, 18991..19035, 19036..19080, 19081..19125, 19126..19170, 19171..19215, 19216..19260, 19261..19305, 19306..19350, 19351..19395, 19396..19440, 19441..19485, 19486..19530, 19531..19575, 19576..19620, 19621..19665, 19666..19710, 19711..19755, 19756..19800, 19801..19845, 19846..19890, 19891..19935, 19936..19980, 19981..20025, 20026..20070, 20071..20115, 20116..20160, 20161..20205, 20206..20250, 20251..20295, 20296..20340, 20341..20385, 20386..20430, 20431..20475, 20476..20520, 20521..20565, 20566..20610, 20611..20655, 20656..20700, 20701..20745, 20746..20790, 20791..20835, 20836..20880, 20881..20925, 20926..20970, 20971..21015, 21016..21060, 21061..21105, 21106..21150, 21151..21195, 21196..21240, 21241..21285, 21286..21330, 21331..21375, 21376..21420, 21421..21465, 21466..21510, 21511..21555