# random

4,702 results, page 27-
## statistics

A random sample of 51 of the largest companies in the united states gave the following P/e ratios 11 35 19 13 15 21 40 18 60 72 9 20 29 53 16 26 21 14 21 27 10 12 47 14 33 14 18 17 20 19 13 25 23 27 5 16 8 49 44 20 27 8 19 12 31 67 51 26 19 18 32 Use a

*asked by Anonymous on June 11, 2011* -
## Maths A

A tyre manufacturer has chosen 48 tyres at random from a production line and issued them to taxis for testing. Assume that the 48 numbers you have selected refer to the number of thousands of kilometres travelled during the life of each tyre. (For example,

*asked by Anna on February 25, 2013* -
## Statistics

A random sample of 51 of the largest companies in the united states gave the following P/e ratios 11 35 19 13 15 21 40 18 60 72 9 20 29 53 16 26 21 14 21 27 10 12 47 14 33 14 18 17 20 19 13 25 23 27 5 16 8 49 44 20 27 8 19 12 31 67 51 26 19 18 32 Use a

*asked by Anonymous on June 11, 2011* -
## statistics

The average age of doctors in certain hospital is 43 years old. Suppose distribution of ages is normal and the standard deviation is 8.0 years. If 25 doctors is chosen at random for a committee, find the probability the average age for those doctors is

*asked by stuart joel on March 12, 2015* -
## math

In a population of 10,000 adults, 20% are smokers. A simple random sample of 600 of the adults is drawn. a)The SE of the number of smokers in the sample is closest to 9.45 9.5 9.55 9.6 9.65 9.7 9.75 9.8 9.85 9.9 b)The chance that there are fewer than 115

*asked by tms on May 19, 2013* -
## fnu

The average age of doctors in a certain hospital is 50.0 years old. Suppose the distribution of ages is normal and has a standard deviation of 4.0 years. If 16 doctors are chosen at random for a committee, find the probability that the average age of those

*asked by giovanny on June 10, 2014* -
## statistics

suppose we selected a random sample of five woman from our school measure the height of each and calculated the sample mean if we wished to know whether the height of woman at our school is typical of height of women inourtown how should we compare our

*asked by rhonda on July 27, 2011* -
## Math

A class is made up of 10 boys and 2 girls. Half of the boys wear glasses. A student is selected at random from the class. What is the probability that the student is a boy with glasses? My Question is, I don't know how to do Probability.

*asked by Emily on April 27, 2009* -
## Statistics

The age distribution of students at a community college is given below. Age (years) Number of students (f) 11) Over 35 26 1103 A student from the community college is selected at random. Find the conditional probability that the student is at most 35 given

*asked by Kelli on October 1, 2014* -
## statistics

A random sample of 84 shoppers were interviewed and 51 said they prefer to shop alone rather than with someone such as friends or family. Let p represent the proportion of all shoppers at this mall who would prefer to shop alone. Find a point estimate for

*asked by Anonymous on August 17, 2012* -
## statistics

twenty percent of drivers drining between 11pm and 3am are drunken drivers. using the binomial probabilities table. fine the problability that in a random sample of 12 drivers drining between 11 pm and 3am , two to four will be drunken drivers

*asked by marie on September 25, 2008* -
## Intro toEpidemiology and health data anaysisl

If the mean number of cigarettes smoked by pregnant women is 12 and the standard deviation is 8, find the probability that in a random sample of 100 pregnant women the mean number of cigarettes smoked will be greater than 20. What does this mean (within

*asked by Octavia on November 21, 2014* -
## Statistics

Suppose X1;X2;...;X5 is a random sample from a n(0; variance) distribution. define U = X1+X2+X3+X4; V = (X2)^2+(X3)^2+(X4)^2+(X5)^2 and W = U/sqrtV. (a) Name the distribution of U/4 and V/(variance) and give the values of their parameters. (b) (i) Compute

*asked by ruth on August 10, 2006* -
## Probability

1. Jamal writes the letters K-A-N-S-A-S on cards and then places the cards in a hat. What is the probability of picking an N? (1 point) one-sixth start fraction 1 over 5 end fraction Start Fraction 5 over 1 End Fraction The fraction is 6 over 1. 2. Justin

*asked by help pleas on April 11, 2018* -
## Probability

Grace has 2 yellow balloons and 3 red balloons. Her brother, Caleb, is going to pop two of the balloons at random. What is the probability that he pops one of the yellow balloons and one of the red balloons?

*asked by PT on March 6, 2018* -
## Math

Two group of male students cost their past on a particular proposal.the result are as follows: Group infavour against A 128 32 B 96 48 if a student in favour of proposal is selected for a post. What is the probability that he is from group A ? if a student

*asked by Johnson on February 4, 2012* -
## Math

Two group of male students cost their past on a particular proposal.the result are as follows: Group infavour against A 128 32 B 96 48 if a student in favour of proposal is selected for a post. What is the probability that he is from group A ? if a student

*asked by Johnson on February 4, 2012* -
## statistics

At a large publishing company, the mean age of proofreaders is 36.2 years, and the standard deviation is 3.7 years. If a random sample of 15 proofreaders is selected, find the probability that the mean age of the proofreaders in the sample will be between

*asked by Cindy on October 22, 2010* -
## statics

Suppose we want to estimate the average number of purchases in a given hour in a local convenience store. Using this example, describe in your own words how you would go about determining this average through: a. Drawing a random sample b. Drawing a

*asked by Anonymous on March 23, 2012* -
## statistics

Two group of male students cost their past on a particular proposal.the result are as follows: Group infavour against A 128 32 B 96 48 if a student in favour of proposal is selected for a post. What is the probability that he is from group A ? if a student

*asked by Johnson on February 4, 2012* -
## Probability

*asked by Johnson on February 4, 2012* -
## MATH PLEASE HELP THIS IS A TEST!!!!!!!!!!!!!!!!

Which events are NOT independent? Landing on heads after tossing a coin and rolling a 3 on a 6- sided number cube Choosing a marble from a jar and landing on tails after tossing a coin Choosing a 5 from a deck of cards replacing it and then choosing an ace

*asked by Priscilla on May 14, 2015* -
## Probability Distribution

An urn has fifteen red balls and nineteen white balls. Three balls are selected at random and the number of red balls are observed. Find the probability distribution for Number of Red Balls: 0 = 1 = 2 = 3 =

*asked by F0reveryoung on April 7, 2012* -
## Math

"A players shuffles 7 red cards and 3 green cards into a random order then places them in a line. If all green cards are net to each other, he wins £10. If all are apart, he wins £2. Otherwise he wins nothing. Find the price up to which the player would

*asked by Americano on October 31, 2014* -
## statistics

the dean of admissions in a large university has determined that the scores of the freshman class in a mathematics test are normally distributed with a mean of 86 and a standard deviation of 11. A sample of 50 students is selected at random from the entire

*asked by Pat on March 26, 2012* -
## Business statistics

You chose a simple random sample of 300 guests you develop a 95 percent confidence interval estimate you found the following 325 and 32 determine the standard error of the sampling distribution determine the critical value z from the standard normal table

*asked by Kim on August 14, 2016* -
## Probability

Given additional information that 56% of the total employees in the company are male and 50% of them are employees who have been working less than 5 years. If an employee selected at random is known to have been working for 5 years or more, what is the

*asked by Joe on October 20, 2009* -
## statistics

According to the MIT Airline Data Project, American Airlines controlled 15.5% of the domestic market in 2010. A random sample of 125 domestic passengers that year was selected. Using the normal approximation to the binomial distribution, what is the

*asked by james on July 20, 2014* -
## statistics

A university has 1000 computers available for students to use. Each computer has a 250 gigabyte hard drive. The university wants to estimate the space occupied on the hard drives. A random sample of 100 computers showed a mean of 115 gigabytes used with a

*asked by Anonymous on October 20, 2013* -
## statistics

In this summer school class there are 28 male students and 15 female students. An experiment is done that consists of selecting a student at random, and recording their gender. This is done 4 times WITH REPLACEMENT. 1) Fill in the following probability

*asked by david on July 10, 2011* -
## Bayes' Theorem

Help!!! I'm not really good at Bayes' Theorem. Can you please walk me through. In the current second year class of a top ranked US university, all students come from three states in the US . Kansas, Illinois, and Ohio supply respectively 40%, 50%, and 10%

*asked by Denise on June 11, 2015* -
## statistics

An internet supplier of refilled ink cartridges for ink jet printers sold cartridges to 30,000 customers over the past two months. A random sample of 1000 of those customers revealed that 18% were not happy with their purchase. The margin of error was 2%.

*asked by Anonymous on February 5, 2012* -
## Statistics

Assume the wait time to see a cardiologist at a certain clinic are uniformly distributed between 7 minutes and 23 minutes. Calculate the probability a randomly selected patient waits at least 18 minutes to see the cardiologist. The random variable, Z, is

*asked by Bill on March 27, 2013* -
## Marketing

Assume that previous fast-food research has shown that 80 percent of the consumers like curly French fries. The researcher wishes to have a standard error 6 percent or less and be 95 percent confident of an estimate to be made about curly French fry

*asked by Donna on March 25, 2013* -
## statistic

Assume that previous fast-food research has shown that 80 percent of the consumers like curly French fries. The researcher wishes to have a standard error 6 percent or less and be 95 percent confident of an estimate to be made about curly French fry

*asked by Donna on March 26, 2013* -
## maths-statistic

A manufacturer wants to assess the proportion of defective items in a large batch produce by a particular machine. He tests a random sample of 300 items and finds that 45 items are defective. If 200 such tests are performed and a 95% confidence interval

*asked by shasha on February 16, 2011* -
## Math MS. SUE PLEASE HELP!!

What is true of a random sample? A) it is the only way to sample a population. B)Each member of the sample is a volunteer. C) It is always the easiest way to sample a population. D) Each member of the population has an equal chance of being selected. MS.

*asked by Liz on May 5, 2017* -
## statistics

In class of 125 students, 70 students passed in Math, 56 students passed in Statistics, and 30 passed in both. The probability that a student selected at random from the class, has passed in only one subject is

*asked by Anonymous on March 23, 2012* -
## math

Given a standard deck of 52 cards, what is the probability that two cards drawn at random will have the same rank? Note that first card drawn is not added back into the deck when the second card is drawn.

*asked by Beatriz on January 26, 2016* -
## math

A draw contains 3 black socks and 2 white socks. A sock isdrawn at random and then replaced. Find each probability. p(2 black) p(black, then white) p(white, then black) p(2white)

*asked by sherry on October 28, 2011* -
## statistics

Assume we draw a simple random sample from a population having a mean of 100 and a standard deviation of 16. What is the probability that a sample mean will be within plus-or-minus two of the population mean for each of the following sample sizes? (a.) n =

*asked by Desire on December 2, 2009* -
## Statistics

Given that x is a normally distributed random variable with a mean of 28 and a standard deviation of 7, find the following probability: P(x

*asked by Anonymous on October 9, 2012* -
## Statistics Question

I have two questions related to moment generating functions. I can't find any sort of examples or explanations in my book... 1) Calculate P(X

*asked by Jillian on November 24, 2007* -
## math

A box contains three white balls and two red balls. A ball is drawn at random from the box and not replaced. Then a second ball is drawn from the box. Draw a tree diagram for this experiment and find the probability that the two balls are of different

*asked by Diana on December 27, 2010* -
## statistics

According to a survey, 21% of motorists in a large city are uninsured. Suppose that currently 21% of all motorists in this city are uninsured. Two motorists are selected at random from this city. Let x denote the number of motorists in this sample of two

*asked by Anonymous on October 10, 2016* -
## Stats

A random sample of two hundred fifteen adults is selected from a certain population of registered voters. Assume the population is 20% democrats. Use a normal approximation to estimate (a) the probability the sample contains exactly 48 democrats, and (b)

*asked by Chris on October 21, 2010* -
## Statistics

T-Test The article “Does Smoking Cessation Lead to Weight Gain?” described an experiment in which 322 subjects, selected at random from those show successfully participated in a program to quit smoking were weighed at the beginning of the program and

*asked by Peter on March 19, 2010* -
## Math- Statistics

An epidemiologist is planning a study on the prevalence of oral contracep- tive use in a certain population. She plans to choose a random sample of n women and to sue the sample proportion of oral contraceptive users (pˆ) as an estimate of the population

*asked by Needs Help on May 4, 2014* -
## stats

Consumer Reports rated airlines and found that 80% of the flights involved in the study arrived on time (that is within 15 minutes of scheduled arrival time). Assuming that the on-time arrival rate is representative of the entire commercial airline

*asked by Mary on May 7, 2017* -
## stats

A random sample of 40 men drank an average of 20 cups of coffee per week during examination final, with the population standard deviation equal to 6 cups. A lower limit of an approximate 95% confidence interval the population average cup of coffee is (1)

*asked by cindy on March 31, 2010* -
## statistics

Employees in a large computer firm claim that the mean salary of the firm’s programmers is less than that of its competitors. The competitor’s salary is $47,000. A random sample of 30 of the firm’s programmers has a mean salary of $46,500 with a

*asked by Eric on June 6, 2011* -
## statistics

Employees in a large computer firm claim that the mean salary of the firm’s programmers is less than that of its competitors. The competitor’s salary is $47,000. A random sample of 30 of the firm’s programmers has a mean salary of $46,500 with a

*asked by Shawnie on June 14, 2011* -
## Stats

Determine the following random variables discrete or continuous: a)Number of fish I caught during 2 hours? I said: discrete b)Temperature of a coffee cup? I said: continuous c)Height of a 2-year-old maple tree? I said: continuous d) Number of credit cards

*asked by Ashley on February 8, 2014* -
## Statistics

Employees in a large computer firm claim that the mean salary of the firm’s programmers is less than that of its competitors. The competitor’s salary is $47,000. A random sample of 30 of the firm’s programmers has a mean salary of $46,500 with a

*asked by Kelly on June 7, 2011* -
## Statistics

Shown below are the data giving the length of life of lights in an underground tunnel. 9.0 months 7.0 months 8.2 months 8.3 months 7.8 months 8.1 months 7.5 months 7.6 months 9.1 months 7.4 months I calculated the standard deviation to be about 0.679.

*asked by Joy on January 22, 2012* -
## science

Shown below are the data giving the length of life of lights in an underground tunnel. 9.0 months 7.0 months 8.2 months 8.3 months 7.8 months 8.1 months 7.5 months 7.6 months 9.1 months 7.4 months I calculated the standard deviation to be about 0.679.

*asked by Joy on January 22, 2012* -
## Statistics

1. A simple random sample of FICO credit rating scores is listed below: 714 751 664 789 818 779 698 836 753 834 693 802 a. Find range, variance, and standard deviation. b. As of this writing, the mean FICO score was reported to be 678. Based on these

*asked by Shannon on October 5, 2013* -
## statistics

twenty light bulbs are tested three light bulbs fail the test. two light bulbs are selected at random without replacement from this collection of bulbs find the probablilty that both light bulbs failed the test. round the answer 3 decimals places

*asked by bernie on July 30, 2016* -
## Statstics

According to a survey by Topez Enterprises, a travel auditing company the avg error by travel agent is 128. suppose this figure was obtained from random sample of 41 travel agent & standard dervivation is 21. What is the point estimate of the national avg

*asked by Karan on August 28, 2016* -
## statistics

a random sample of 100 college students is taken from the student body of a large university. assume that a population mean of 20 hours and a population standard deviation of 15 hours describes the weekly study estimates for the entire student body. About

*asked by jc on June 27, 2010* -
## statistics

a random sample of 80 college students was selected to participate in a experiment. the mean of the sample is 317 points, the standard deviation of 37 there are 310 students that didn't complete the experiment 1. compute the appropriate test statistic? 2.

*asked by Anonymous on July 11, 2012* -
## statistics

The mean of math SAT scores is 500 and the standard deviation is 100. A random sample of 64 students from Leeds H.S. received an average of 480. Conduct a hypothesis test to determine if the population mean SAT score for Leeds H.S. is less than 500 with

*asked by lola on April 19, 2012* -
## Statistics

The following is a histogram (right skewed) of the first ten terms of a geometric distribution with p = .4. The mean of this distribution is 2.5 and the standard deviation is approximately 1.93. What's the shape of the distribution of sample means for

*asked by Jim on February 18, 2016* -
## AP Stat

A random sample of 15 people is taken from a population in which 40% favour a particular political stand. What is the probability that exactly 6 individuals in the sample favour this political stand? 0.4000 0.5000 0.4000 0.2066 0.0041

*asked by Cb on November 24, 2009* -
## math

luis has a deck of ten cards with theres numbers 1,3,5,7,9,11,13,15,17,19.luis will draw a card at random from the deck.name an event for which there is a problity of 1/2 that it will happen.name an event for which this is a problity of the that will

*asked by sasha michal on January 13, 2012* -
## statistics

Thirty-two percent of adults did not visit their physicians' offices last year. The probability, rounded to four decimal places, that in a random sample of 8 adults, exactly 3 will say they did not visit their physicians' offices last year is:

*asked by Vera on October 26, 2013* -
## Probability i need help

In a form 1A class there are 25 boys and 20 girls.in a form 1B there are 20boys and 15girls.A learner is choosen at random from each class.find the probability that (a):both learners are boys (b):the choosen learners are of different sexes????

*asked by Collins on October 10, 2015* -
## Literature

I asked my teacher about the vignette on my sister, and she said I could do it but first I have to brainstorm and write as many words that relate to her but I can't get much so I'm changing my topic to summer. I'm supposed to get as many random words that

*asked by mysterychicken on October 16, 2009* -
## Statistics

Dr. Hernandez plans to measure FEV in a random sample of n young women from a certain popu- lation, and to use the sample mean y ̄ as an estimate of the population mean. Let A be the event that Hernandez’s sample mean will be within ±100 ml of the

*asked by Audrey on May 4, 2014* -
## Chemistry

Say you are observing a motional behavior of 40 Helium molecules. Keeping the basic concepts of the kinetic-molecular theory of gases in mind: You follow one of the molecules with your eye. Over a lengthy period of time, does the molecule exhibit

*asked by Anonymous on November 5, 2012* -
## government

which fact disqualifies a person from representing utah in the senate a. the candidate was born in guatemala b. the candidate is 43 years old c. the candidate lives in utah but works in idaho d. the candidate has been a citizen for 8 years wow, really

*asked by jere on December 27, 2007* -
## English

Can anybody help me to write an essay about"A way to decrease chance of becoming a victim of random violence". Don't walk in parking garages alone late at night. carry around pepper spray. easy as that. Martial arts can be very helpfull in some situations

*asked by louise on November 30, 2006* -
## algebra

if the gym charges a registration fee of $60.00 and a membership fee of $20.00 per month. and the manager waived the registration fee for 50 random people. write a expression to represent how much money the gym will make. after 6 months how much money will

*asked by David on September 10, 2018* -
## ENGLISH

I am trying to see if I should use raised or reared when speaking of a child. According to the usage note in Random House Dictionary and the American Heritage Dictionary, either raise or rear is correct in standard American English.

*asked by MARCIA on July 24, 2007* -
## elementary statistics

A statistics professor is used to having a variance in his class grades of no more than 100. He feels that his current group of students is different, and so he examines a random sample of midterm grades (listed below). At 0.05 alpha level can it be

*asked by David on December 1, 2013* -
## elementary statistics

A statistics professor is used to having a variance in his class grades of no more than 100. He feels that his current group of students is different, and so he examines a random sample of midterm grades (listed below). At 0.05 alpha level can it be

*asked by David on December 1, 2013* -
## statistics

Listed below are the duration's (in hours) of a simple random sample of all flights of a space shuttle program. Find the range, variance, and standard deviation for the sample data. Is the lowest duration time unusual? Why or why not? 71, 100, 237, 199,

*asked by slomo on February 13, 2015* -
## Statistics

According to a recent survey, 65% of all customers will return to the same grocery store. Suppose 11 customers are selected at random,what is the probability that A) exactly 5 will return? B) all 11 will return? C) at least 6 will return D) at least one

*asked by Kim on December 8, 2017* -
## statistics

An April 15, 2002 report in Time Magazine stated that the average age for women to marry in the United States is now 24.9 years of age. If the standard deviation is assumed to be 4.9 years, find the probability that a random sample of 33 U.S. women would

*asked by jilla on July 7, 2012* -
## STATISTICS

An April 15, 2002 report in Time Magazine stated that the average age for women to marry in the United States is now 24.9 years of age. If the standard deviation is assumed to be 4.9 years, find the probability that a random sample of 33 U.S. women would

*asked by judy( Help needed ,Please!? on July 7, 2012* -
## statistics

An April 15, 2002 report in Time Magazine stated that the average age for women to marry in the United States is now 25.6 years of age. If the standard deviation is assumed to be 4.1 years, find the probability that a random sample of 30 U.S. women would

*asked by statistics student on October 4, 2013* -
## statistics

An April 15, 2002 report in Time Magazine stated that the average age for women to marry in the United States is now 24.9 years of age. If the standard deviation is assumed to be 4.9 years, find the probability that a random sample of 33 U.S. women would

*asked by jennifer on July 7, 2012* -
## statistics

An April 15, 2002 report in Time Magazine stated that the average age for women to marry in the United States is now 25.1 years of age. If the standard deviation is assumed to be 4.6 years, find the probability that a random sample of 34 U.S. women would

*asked by Kay on March 5, 2013* -
## Statistics

An April 15, 2002 report in Time Magazine stated that the average age for women to marry in the United States is now 25.9 years of age. If the standard deviation is assumed to be 4.3 years, find the probability that a random sample of 32 U.S. women would

*asked by Casey on October 7, 2013* -
## MTH233/statistics UOP

Please complete the following 5-step hypothesis testing procedure in your Learning Teams: A simple random sample of forty 20-oz bottles of Coke® from a normal distribution is obtained and each bottle is measured for number of ounces of Coke® in the

*asked by sue on August 1, 2010* -
## Statistics

These are the only ones that I am having problems with. Please help.. 8.You are given the sample mean and the sample standard deviation. Use this information to construct the 90% and the 95% confidence intervals for the population mean. Interpret the

*asked by Katie on February 18, 2013* -
## Statistics

Any ideas please? Simple random sample of voters will be taken in a large state. Researchers will construct an approximate 95% confidence interval for the percent of the state¢s voters who will vote for Candidate A. Find the minimum sample size needed to

*asked by Andrew on July 24, 2013* -
## Statistics

It has been reported that 48% of teenagers play video games on their phones. A random sample of 60 teenages is drawn. Find the probability that the proportion of teenagers in the sample who play videos games on their phone is less than 0.499 . Write only a

*asked by Obi on October 19, 2015* -
## Statistic

Below are listed the numbers of doctors in various specialties by gender. Pathology Pediatric Psychiatry Male 12,575 33,020 27,803 Female 5,604 33,351 12,292 Choose 1 doctor at random. (a) Find the probability of choosing a Pathologist or a female? b.)

*asked by Bella on March 25, 2013* -
## Statistics

A production process is checked perifically by a quality control inspector. The inspector selects simple random samples of 30 finished products and computes the sample mean product weights x. If test results over a long period of time show that 5% of the x

*asked by Rebecca on October 30, 2007* -
## Sample

Recall that “very satisfied” customers give the XYZ-Box video game system a rating that is at least 42. Suppose that the manufacturer of the XYZ-Box wishes to us the random sample of 65 satisfaction ratings to provide evidence supporting the claim that

*asked by Statistics on June 14, 2011* -
## Math

you have four $1 bills, two $5 bills, five $10 bills, and five $ 20 bills in your wallet. You select a bill at random. Without replacing the bill, you choose a second bill. What is P($1, then$ 10)?

*asked by Katie on April 23, 2015* -
## statistics

60% of the students at a college are female. If 13 students at that college are selected random, find the probability that 5 or 6 students will be female

*asked by jill on March 7, 2011* -
## Sampling Distribution

It was reported by the National Forensic Center in the Guide to Experts Fees, 1998-99 that the average fee of forensic accountants for court testimony was 1500. Assume that the population standard deviation is 600. What is the probability that, in a random

*asked by Angela on May 17, 2011* -
## Stats

I am working on a review sheet and got everything except for this one. I am not sure whether to use z or t. The number of hours per week that high school juniors watch TV is normally distributed with a mean of 8 hours and a standard deviation of 2 hours.

*asked by Joe on May 21, 2014* -
## statistics

a manufacturer of detergent claims that the contents of the boxes in the market weigh on average at least 16 oz.. the distribution of weights is known to be normal with a standard deviation of 0.4 oz. to test the claim of the manufacturer a random sample

*asked by sayera on May 28, 2012* -
## statistics

a manufacturer of detergent claims that the contents of the boxes in the market weigh on average at least 16 oz.. the distribution of weights is known to be normal with a standard deviation of 0.4 oz. to test the claim of the manufacturer a random sample

*asked by sayera on May 28, 2012* -
## Maths

The probability a pupil takes a bus to school is 0.3. If a sample of 10 pupils are chosen at random. Using binomial distribution. Find the probability that a) exactly four pupils travel by bus. b) more than six pupils travel by bus.

*asked by Chris on March 20, 2016* -
## Statistics

A maker of microwave ovens advertises that no more than 10% of its microwaves need repair during the first 5 years of use. In a random sample of 57 microwaves that are 5 years old, 13% needed repairs. At á=0.01, can you reject the maker’s claim that no

*asked by George on May 5, 2010* -
## statistics

The U.S. Census Bureau reported 77% of the U.S population had internet access in 2009. Choosing 3 random individuals find the probability that a. none of the 3 inidivuals has internet b. all of the individuals have internet access c. at least 1 of the 3

*asked by Krislina on March 2, 2013*