# random

4,782 results, page 28-
## 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 22, 2012* -
## 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* -
## 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

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* -
## 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 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* -
## 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

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* -
## 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* -
## 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 18, 2010* -
## 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* -
## 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 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 Kelly on June 7, 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* -
## 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

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 29, 2016* -
## 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

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* -
## 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

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* -
## 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* -
## 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 12, 2012* -
## 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* -
## 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* -
## 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 15, 2009* -
## 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* -
## 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* -
## 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 29, 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* -
## 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 November 30, 2013* -
## 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 November 30, 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* -
## 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 July 31, 2010* -
## 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 25.6 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 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 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 25.9 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* -
## 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

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 17, 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* -
## 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 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 18, 2015* -
## math statistics

IQ scores in the US population have an average of µ = 100 and a standard deviation of σ = 15. Suppose a researcher wanted to test whether socioeconomic status (SES) has an effect on IQ scores. The researcher takes a random sample of n = 100 people,

*asked by gloria on January 12, 2019* -
## 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 13, 2011* -
## Statistics

A recent survey determine the IQ score of a random selection of residents of Alaska. The accompanying relative frequency distribution table summarizes the results. Identify the class width for the given relative frequency distribution. IQ Score----Relative

*asked by girlygirl on October 31, 2018* -
## 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 22, 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 6, 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* -
## 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* -
## 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

The national centre of health statistics reports that the mean systolic blood pressure for males 35-44 years of age is 128 and a standard deviation of 15. A group of 50 executives selected at random are tested and found to have an avarage of 132.3. Is

*asked by Sue on April 16, 2013* -
## Statistics

Safety researchers, interested in determining whether the occupancy of a vehicle might be related to the speed at which the vehicle is driven, have observed the following speed (mph) measurements for two random samples of vehicles. Alone With Pass 64 44 50

*asked by Jo on October 3, 2009* -
## political science

During the 2nd Party System in American politics, parties moved from a ______ in Congress to a _______ in order to pick candidates and develop a party platform. caucus; national convention informal poll; direct primary caucus; direct primary random

*asked by ryan on April 10, 2016* -
## Statistics

The heights of women in a certain population have a Normal distribution with mean 64 inches and standard deviation 3.5 inches. We select three women at random from this population. Assume that their heights are independent. Find the probability that the

*asked by Sarah on November 20, 2016* -
## statistics

The amount of time spent by North American adults watching television per day is normally distributed with a mean of 6 hours and a standard deviation of 1.5 hours. What is the probability that in a random sample of five North American adult at least two of

*asked by Anonymous on November 16, 2010* -
## Probability

If a women with a BMI below 25 are considered to be normal weight, how many of these women would be classified as overweight? If you choose a woman at random, what is the probability that she will be overweight. Chart below BMI Frequency 15.0-19.9 9

*asked by bria on July 11, 2012* -
## Binomial Math

The manager of Toy World has decided to accept a shipment of electronic games if there is no more than 1 defective electronic game in a random sample of size 17. What is the probability that he will accept the shipment if 15% of the electronic games is

*asked by Bersy on January 27, 2013* -
## math

Riena has six unmarked CDs in a box, where each is dedicated to exactly one of English, mathematics, French, American history, chemistry, and computer science. Answer the following questions: a. If she chooses a CD at random, what is the probability she

*asked by kirk on August 12, 2010* -
## Pre-calculus

A set of data is normally distributed with a mean of 500 and standard deviation of 40. a). What percent of the data is between 460 and 540? P(460

*asked by Mary on January 16, 2009* -
## Stats

A car insurance company has determined that 7% of all drivers were involved in a car accident last year. The company randomly selects 200 drivers. Compute the mean and standard devistion of the random variable, x, the number of drivers involved in

*asked by Christine on November 5, 2010* -
## science

Which of the following is NOT true about compounds? A) compounds join in specific ratios according to their masses B) the mass ratio of a specific compound is always the same C) compounds are random combinations of elements D) different mass ratio mean

*asked by Katherine on November 13, 2009* -
## Statistics

It is reported that 72% of working women use computers at work. Choose 5 working women at random. Find a. The probability that at least 1 doesn't use a computer at work b. The probability that all 5 use a computer in their jobs

*asked by Amber on November 11, 2014* -
## statistics

The sample mean to be calculated from a random sample of size n= 4 from a population consists of eight measurements (2, 6, 9, 12, 25, 29, 39, 50) . find the sampling distribution of y .(Hint : there are 70 samples of size 4 when sampling from a population

*asked by koky on November 14, 2010* -
## statistics

Suppose that 65% of all California State students own a motorcycle. A random sample of 100 CS students is surveyed and 61% indicate that they own a motorcycle. a. What is the value of the population percent given to you in the problem? b. What is the value

*asked by Rochelle on June 14, 2012* -
## math

The sample mean to be calculated from a random sample of size n= 4 from a population consistsof eight measurements (2, 6, 9, 12, 25, 29, 39, 50) . find the sampling distribution of y y .(hint : there are 70 samplesof size 4 when sampling from a population

*asked by heba on November 13, 2010* -
## statistics

Suppose that 65% of all California State students own a motorcycle. A random sample of 100 CS students is surveyed and 61% indicate that they own a motorcycle. a. What is the value of the population percent given to you in the problem? b. What is the value

*asked by Rochelle on June 14, 2012* -
## statistics

The average temperature in households is 67.6 degrees F. The standard deviation is 4.2 degrees F. A random sample of 51 households is to be selected What is the probability that the average of this sample will be within 1.4 STANDARD ERRORS of the

*asked by Kristin on September 28, 2012* -
## math

A basket at a baby shower contains 8 bottles of pink nail polish numbered 1 through 8, and 9 bottles of red nail polish numbered 1 through 9. One bottle is drawn from the basket at random.

*asked by Anonymous on December 16, 2016* -
## Stats (probability)

Of 10 girls in a class, 3 have blue eyes. If two girls are chosen at random, what is the probability that (i) both have blue eyes, (ii) neither has blue eyes, (iii) at least one has blue eyes? I have the answers but do not know how to get them. I'm trying

*asked by Morgan on March 16, 2011* -
## communication

Let X,Y be discrete random variables related as Y=g(X), where g is a deterministic function. The ordering of their entropies satisfies H(X)≤H(Y), equality holds if g is a one to one mapping H(X)≥H(Y), equality holds if g is a one to one mapping

*asked by digital communication on August 8, 2018* -
## Statistics

among customers- 70% buy popcorn, 40% buy ice cream, and 25% by both. Suppose you pick one customer at random. Find the probability the customer buys popcorn or ice cream.

*asked by Jasmine on June 15, 2012* -
## Math check

Consider the binomial random variable x with n = 30 and p = 0.85. (a) Find the mean. (Give your answer correct to one decimal place.) 25.5 . (b) Find the standard deviation. (Give your answer correct to two decimal places.) 30.85

*asked by Nora 511 on June 6, 2013* -
## government

the best example of the use of random sampling to determine who will be elected as your school president would involve a. asking each student in your class whom he or she would vote for b. asking one student in each classroom whom he or she would vote for

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

A standardized third grade reading test, called the We Can Read Test, has a mean of 50 with a standard deviation of 10. A developmental psychologist conducts a study, where he assesses the reading ability of a random sample of 75 third graders using the We

*asked by Lee on April 16, 2014* -
## statistics

The diameters of apples in a certain orchard are normally distributed with a mean of 4.77 inches and a standard deviation of 0.43 inches. Show all work. (A) What percentage of the apples in this orchard is larger than 4.71 inches? (B) A random sample of

*asked by Valerie on November 2, 2010* -
## Probabilities

A group of 5 people are going to meet weekly at the library for 4 weeks. Each week, two people are selected at random to speak. Each person may speak in multiple weeks, but no pair of people will speak together more than once. The probability that there is

*asked by Anna on April 1, 2013* -
## statistics

The diameters of apples in a certain orchard are normally distributed with a mean of 4.77 inches and a standard deviation of 0.43 inches. Show all work. (A) What percentage of the apples in this orchard is larger than 4.71 inches? (B) A random sample of

*asked by Laynette on September 2, 2011* -
## College Math

Suzan sees a bag of marbles, she grabs a handful at random. She has seen a bag containing three red marbles, four green ones, five white ones, and one purple one. She grabs seven of them. Find the probability of the following event, expressing it as a

*asked by Anonymous on November 20, 2016* -
## statistics

A standardized third grade reading test, called the We Can Read Test, has a mean of 50 with a standard deviation of 10. A developmental psychologist conducts a study, where he assesses the reading ability of a random sample of 75 third graders using the We

*asked by Lee on April 15, 2014* -
## math

The digits 2, 4, 6, 8 and 0 are used to make five-digit numbers with no digits repeated. What is the probability that a number chosen at random from these numbers has the property that the digits in the thousands place and ten's place are each larger than

*asked by Alex on December 11, 2018* -
## maths

A group of 5 people are going to meet weekly at the library for 4 weeks. Each week, two people are selected at random to speak. Each person may speak in multiple weeks, but no pair of people will speak together more than once. The probability that there is

*asked by stranger on April 1, 2013* -
## maths

A group of 5 people are going to meet weekly at the library for 4 weeks. Each week, two people are selected at random to speak. Each person may speak in multiple weeks, but no pair of people will speak together more than once. The probability that there is

*asked by stranger on April 2, 2013* -
## statistics

The process that produces Sonora Bars (a type of candy) is intended to produce bars with a mean weight of 55 gm. The process standard deviation is known to be 0.77 gm. A random sample of 49 candy bars yields a mean weight of 55.82 gm. Find the test

*asked by Anonymous on April 22, 2014* -
## Econ

The process that produces Sonora Bars (a type of candy) is intended to produce bars with a mean weight of 55 gm. The process standard deviation is known to be 0.77 gm. A random sample of 49 candy bars yields a mean weight of 55.82 gm. Find the test

*asked by alex on April 22, 2014* -
## math finite

Assume that there are 7 different issues of Newsweek, 8 different issues of Time, and 4 different issues of Sports Illustrated, including the December 1st issue, on the rack. You choose 4 of them at random. (1) What is the probability that you choose 2

*asked by victoria on February 20, 2012* -
## Math

The diameters of grapefruits in a certain orchard are normally distributed with a mean of 5.52 inches and a standard deviation of 0.46 inches (A) What percentage of the grapefruits in this orchard is larger than 5.45 inches? (B) A random sample of 100

*asked by Michael on October 28, 2012*