Wednesday

September 28, 2016
**Statistics**

A certain type of artificial heart has four independent, critical components.Failure of any one of these components is a serious problem that will cause the artificial heart to fail. The 5 year failure rate for each component follows: component 1=.02, component 2=.05, ...

*Wednesday, October 28, 2015 by Brandy*

**Statistics - PLEASE HELP!**

For a lottery game, each ticket has a probability of 1 / 3.09 = 0.324 of winning a prize. Every friday you buy 1 lottery game. a) What is the probability you will win on two of your next three games?

*Wednesday, October 28, 2015 by Lucie*

**Behavioral Statistics Help!**

The majority of the data is normally distributed if there are enough subjects. For instance, if you collected test scores of only a few honor students, the data will most likely not be normally distributed because you would have a sample that did not represent the entire ...

*Wednesday, October 28, 2015 by slomomo*

**Behavioral Statistics**

Let's say that the standardized test had 100 possible points. If we wanted to identify the top 25%, why not just select those with raw scores above 75? Why do we have to standardize the scores?

*Tuesday, October 27, 2015 by slomomo*

**Geography**

What country has similar statistics to Sweden

*Tuesday, October 27, 2015 by Geo*

**History**

Haiti and Cuba are relatively close to each other. What is your theory on why their population statistics are so different?

*Tuesday, October 27, 2015 by Geo*

**statistics**

all patients who present to the emergency services department with a suspected acute myocardial infraction are expected to receive an ECG within ten minutes of their arrival. Of the 56 patients who had a suspected AMI during the last quarter, 32 had an ECG within the specified...

*Monday, October 26, 2015 by Anonymous*

**statistics**

An internal study by the Technology Services department at Lahley Electronics revealed company employees receive an average of two emails per hour. Assume the arrival of these emails is approximated by the Poisson distribution. a. what is the probability that Linda Lahey, ...

*Monday, October 26, 2015 by sania*

**statistics**

In a large Midwestern university, 30% of the students live in apartments. If 200 students are randomly selected, find the probability that the number of them living in apartments will be between 55 and 70 inclusive.

*Monday, October 26, 2015 by Dabney*

**Behavioral Statistics**

Let's say that the standardized test had 100 possible points. If we wanted to identify the top 25%, why not just select those with raw scores above 75? Why do we have to standardize the scores?

*Sunday, October 25, 2015 by slomomo*

**Statistics**

A sample of n = 25 scores has a mean of M = 40 and a variance of s2 = 100. If this sample is being used to test a null hypothesis stating that m = 43, then what is the t statistic for the sample

*Sunday, October 25, 2015 by Ann*

**Statistics**

The same supervisor in the scenario above agreed to increase the salary of the employee to $15.00 per hour once she passed her RHIT exam. Three months after beginning her employment , the employee passed her RHI exam. What will the new budget be for salary and fringe benefits?

*Friday, October 23, 2015 by Sharon*

**Behavioral Statistics**

Explain the general rationale behind using a z-score for describing how an individual performed on an exam compared to just stating the overall mean and the individual's score. How does the information differ in the two situations? What additional information are you ...

*Thursday, October 22, 2015 by slomomo*

**Behavioral Statistics**

Imagine you are in charge of reviewing applications for your academic institution. As a preliminary measure, you want to review only the top 25% of applicants on the basis of standardized test scores. How does calculating the z-score provide additional information regarding ...

*Thursday, October 22, 2015 by Slomo*

**Math/Probability/Statistics**

Find the expected value and the standard deviation in the following raffle: Value Tickets Grand Prize: $2,000.00 1 Second Place Prize: $800.00 20 Third Place Prize: $40.00 60 Fourth Place Prize: $30.00 300 Total Number of Tickets Sold: 10000

*Thursday, October 22, 2015 by Anonymous*

**Statistics**

the heights of young women are approximately Normal with 65 inches and standard deviation 2.5 inches. The heights of men in the same age group have mean 70 inches standard deviation 2 inches. What percentage of women are taller than a man of average (mean) height?

*Wednesday, October 21, 2015 by Tay*

**Statistics**

A restaraunt offers a dinner special that lets you choose from 10 entrees, 8 side dishes, and 13 deserts. You can choose one entree, two side dishes, and one desert. How many different meals are possible?

*Wednesday, October 21, 2015 by Sam*

**statistics**

Two cards are drawn from a well-shuffled ordinary pack of 52 cards. The first card is replaced before selecting the second card. Find the following probabilities. (iii) One is King and one is queen (iv) Both are faced cards

*Wednesday, October 21, 2015 by usman*

**Statistics**

At the end of the Halloween Festival the organizers estimated that a family of participants spent an average $45.00 with a standard deviation of $12.00. What’s the probability that the mean amount spent will be between $20 and $30?

*Wednesday, October 21, 2015 by Karen*

**statistics**

Mamma temte bakes six pies a day that cost $2. on 15% of the days she sells 3 pies, on 30% of the days she sells 4. On 55% of the days she sells six pies, if mama temte sells her pies for $6 each, what is her expected profit for a days worth of pies?[assuming extras will be ...

*Wednesday, October 21, 2015 by Anonymous*

**Statistics**

a bag of colored marbles holds 71 yellow marbles and 70 white marbles. ten marbles are randomly selected, one at a time, without replacement. what is the probability that more than half are yellow?

*Monday, October 19, 2015 by Renee*

**Statistics**

A family consists of ten children. Assuming that the sexes are equally probable, find the expected number of boys in the family. What is the probability that the expected number of boys will not occur? (Not sure where to start) I got partial credit and I answered 5 (Question ...

*Monday, October 19, 2015 by Megan*

**Statistics**

It is estimated that heights of adult men are normally distributed with a mean of 70 inches and a standard deviation of 3.5. In one state, the law requires a person to be 68 inches or taller to become a fire fighter. (a) What proportion of adult men will meet this height ...

*Monday, October 19, 2015 by Erin*

**Statistics**

The height of a tree will be measured using a clinometer. For this device, the measurement error has a normal distribution with mean μ=0.00 meter and standard deviation σ=0.05. If the tree is exactly 30 meters tall, what is the probability that the clinometer will ...

*Monday, October 19, 2015 by Emily*

**Statistics **

The retail price of 12-pack soda can be characterized as having a normal distribution with a mean of 3.05 dollars and a standard deviation of 0.24. Below what price do you find 40 percent of all 12-packs?

*Monday, October 19, 2015 by Justine *

**statistics**

The experience of a certain hospital showed the the distribution of length stay of patients is normal with a mean of 11.5 days and a standard deviation of 2 days. a. What percentage of the patients stayed nine days or less? b.If a new method of nursing care is to be ...

*Sunday, October 18, 2015 by maica*

**Statistics**

At a certain university, 50% of all entering freshmen planned to major in a STEM (science, technology, engineering, mathematics) discipline. A sample of 36 freshmen is selected. What is the probability that the proportion of freshmen in the sample is between 0.475 and 0.580? ...

*Sunday, October 18, 2015 by Obi*

**Statistics**

74% of freshmen entering public high schools in 2006 graduated with their class in 2010. A random sample of 81 freshmen is selected. Find the probability that the proportion of students who graduated is greater than 0.750 . Write only a number as your answer. Round to 4 ...

*Sunday, October 18, 2015 by Obi*

**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 number as your ...

*Sunday, October 18, 2015 by Obi*

**Statistics**

According to one pollster, 48% of people are afraid of flying. Suppose that a sample of size 20 is drawn. Find the value of standard error , the standard deviation of the distribution of sample proportions. Write only a number as your answer. Round to two decimal places (for ...

*Sunday, October 18, 2015 by Obi*

**Statistics**

At a certain concert, 43% of the audience was under 20 years old. A random sample of n = 181 members of the audience was selected. Find the value of sample mean, the mean of the distribution of sample proportions. Write only a number as your answer. Do not write as a percentage.

*Sunday, October 18, 2015 by Obi*

**Psychological Statistics**

A professor records scores from a five-point quiz for each student in an introductory psychology class. If the data were presented in a frequency distribution graph, what type of graph should be used?

*Friday, October 16, 2015 by Jay*

**statistics**

You are part of a school and have to report the results of standardized test scores. Which measure of central tendency would you use? Assume that you don't know how your students will perform; so consider the general effects of outliers on the three measures of central ...

*Thursday, October 15, 2015 by slomomo*

**statistics**

how we compare three different standard deviations

*Thursday, October 15, 2015 by shekhar*

**Statistics**

for a population with m=62 and s=12, find the x value that corresponds to esch of the following z-scores: -0.25,-1.50,0.50,2.00

*Wednesday, October 14, 2015 by Gloria*

**Statistics**

n=13 p=0.75 p (more than 11)

*Wednesday, October 14, 2015 by Jen*

**math statistics**

Convert Ken's chest, waist, and hips measurements to z-scores. Which of these measures appears to be the most different from kens reference group(human males)? Justify with an appropriate statistical argument. Ken's chest=75.0,waist=56.5,hips=72.0 Human x-bar chest is ...

*Wednesday, October 14, 2015 by zan*

**Statistics**

Suppose that the weight of male babies less than 2 months old is normally distributed with mean 11.5 pounds and standard deviation 2.7 pounds. A sample of 36 babies is selected. What is the probability that the average weight of the sample is less than 11.07 pounds? Write only...

*Wednesday, October 14, 2015 by Obi*

**Statistics**

Find the z-score for which the area to its left is 0.46 . Write only a number as your answer. Round to two decimal places (for example: 0.81).

*Tuesday, October 13, 2015 by Obi*

**Statistics**

Find the z-score for which the area to its right is 0.65 . Write only a number as your answer. Round to two decimal places (for example: 0.81).

*Tuesday, October 13, 2015 by Obi*

**Statistics**

The z-scores that bound the middle 35 % under the standard normal curve are z = -a and z = a. Find the value of a. Write only a positive number as your answer. Round to two decimal places (for example: 0.81).

*Tuesday, October 13, 2015 by Obi*

**Statistics**

Find z 0.44 . Write only a number as your answer. Round to two decimal places (for example: 0.81).

*Tuesday, October 13, 2015 by Obi*

**statistics**

a bag contains 10 red balls and 7 blue balls.a ball is drawn at random.the probability that ball drawn is red is

*Monday, October 12, 2015 by ahsan*

**STATISTICS**

A salesperson contacts eight potential customers per day. From past experience, we know that the probability of a potential customer making a purchase is .05. b.) What is the probability the salesperson will make exactly two sales in a day? this is what I think the answer is 0...

*Friday, October 9, 2015 by Anna*

**Math / Statistics**

{ In a recent basketball game, a player who makes 65% of his free throws made eight consecutive free throws. Assuming that free-throw shots are independent, determine whether this feat was unusual. } I'm just a little lost on how to determine if it's unusual or not. I ...

*Friday, October 9, 2015 by Mira*

**Statistics**

A researcher is studying the effects of caffeine on exam scores of college students. In this study: What would be the population and sample of this research? Extrapolate your views of the advantages and disadvantages of samples and populations to this example. Why would the ...

*Friday, October 9, 2015 by Slomo*

**statistics**

why and what dothese answers mean 29th percentil greater than 30th percentile

*Friday, October 9, 2015 by laurie parker*

**Probability and Statistics**

In the game of euchre, the deck consists of the 9, 10, jack, queen, king and ace of each suit. Players are dealt a five card hand. What is the probability that a player is dealt 3 hearts?

*Thursday, October 8, 2015 by Alissa*

**Statistics**

Do the samples appear to be from the same population? Why or why not? Support your answer with numerical facts and convincing reasons and explanations Chemical distribution stats: Five # summary: (2.29816, 2.29869, 2.299152, 2.30074) Mean: 2.299706 Standard deviation: 0.001313...

*Thursday, October 8, 2015 by Ashley*

**statistics**

: Two cards are drawn from a well-shuffledordinary pack of 52 cards. The first card is replaced before selecting the second card. Find the following probabilities. (i) Both are kings (ii) First is king and second is queen (iii) One is King and one is queen (iv) Both are faced ...

*Thursday, October 8, 2015 by ahsan*

**statistics**

A student takes an exam containing 14 multiple choice questions. The probability of choosing a correct answer by knowledgeable guessing is 0.5. At least 9 correct answers are required to pass. If the student makes knowledgeable guesses, what is the probability that he will ...

*Thursday, October 8, 2015 by donna*

**statistics**

supposed that two balanced dice are rolled. let Y denote the product of the two numbers. use random variable notation to represent the event that the product of the two numbers is greater than 4 a {5,6} b {XY>4} c{Y>4} d P(Y>4)

*Wednesday, October 7, 2015 by A*

**statistics**

2. Find the variance and standard deviation of the following sample. 0 -5 -3 6 4 -4 1 -5 0 3

*Wednesday, October 7, 2015 by omar*

**AP Statistics**

Do the samples appear to be from the same population? Why or why not? Support your answer with numerical facts and convincing reasons and explanations Chemical distribution stats: Five # summary: (2.29816, 2.29869, 2.299152, 2.30074) Mean: 2.299706 Standard deviation: 0....

*Wednesday, October 7, 2015 by Ashley*

**Statistics**

STATISTICS: I'm struggling with how to calculate the following problems: *Assume that X~N(3,1.5) For what value of X is Pr(x<K) = 50% *Assume that X~N(3,1.5) What value of X would be equal to a z-score of -2? *Assume that X~N(3,1.5) Find the 90% percentile *Assume X~N(4...

*Wednesday, October 7, 2015 by BONACA*

**Statistics**

1. If P(A) = 0.4 P(B) = 0.2 and P(A or B) = 0.5, find the sum of P(A and B) and P(A|B). -How would I even start this question? 2. Let A and B be two mutually exclusive events for which P(A) = 0.15 and P(B) = 0.3. Find P(A and B). -If it's mutually exclusive, wouldn't ...

*Tuesday, October 6, 2015 by Alex*

**Statistics**

According to one survey, the mean serum cholesterol level for U.S. adults was 195.1, with a standard deviation of 41.5. A simple random sample of 95 adults is chosen. Find the 46 percentile for the sample mean. Write only a number as your answer. Round to one decimal places.

*Tuesday, October 6, 2015 by Tommy*

**Statistics**

Electricity bills in a certain city have mean $108.73. Assume the bills are normally distributed with standard deviation $10.60. A sample of 47 bills was selected for an audit. Find the 46 percentile for the sample mean. Write only a number as your answer. Round to two decimal...

*Tuesday, October 6, 2015 by Tommy*

**Statistics**

A survey among freshman at a certain university revealed that the number of hours spent studying the week before final exams was normally distributed with mean 25 and standard deviation 15. A sample of 36 students was selected. What is the probability that the average time ...

*Tuesday, October 6, 2015 by Tommy*

**Statistics**

The mean monthly rent for a one-bedroom apartment without a doorman in Manhattan is $2,651. Assume the standard deviation is $500. A real estate firm samples 100 apartments. What is the probability that the average rent of the sample is more than $2,708? write only a number as...

*Tuesday, October 6, 2015 by Tommy*

**Statistics**

Suppose that the weight of male babies less than 2 months old is normally distributed with mean 11.5 pounds and standard deviation 2.7 pounds. A sample of 36 babies is selected. What is the probability that the average weight of the sample is less than 11.07 pounds? Write only...

*Tuesday, October 6, 2015 by Tommy*

**Statistics**

I know don't know if this right P(X)<115)= 12.1 (115-mean) how do I get the mean or is there a formula that can help me solve this? A population of line voltages has a standard deviation of 1.20 volts. What value would the mean line voltage have to be so that 12.1% of ...

*Monday, October 5, 2015 by Will*

**bio statistics question!**

Does P(x) = x/5, where x can take values of 0, 1, 2, 3, describe a probability distribution? Would the answer be no because when x is 1, 2, or 3 the values become 0.2, 0.4, and 0.6. But in probability distribution the values have to be between 0 and 1?

*Monday, October 5, 2015 by maria*

**Statistics**

If you throw a six sided die twice, what is the probability that you will get: (i) A one on the first throw OR a two on the second throw ? (ii) A one on the first toss AND a two on the second toss of the die ?

*Monday, October 5, 2015 by michael*

**Statistics**

If 12 women are randomly selected, what is the probability that their mean head circumference is between 21.8 in and 22.8 in.? If this probability is high does it suggest that an order of 12 hats will very likely for each of 12 randomly selected women? Why or why not? Assume ...

*Sunday, October 4, 2015 by Kacey*

**statistics**

The number of hours per week that the television is turned on is determined for each family in a sample. The mean of the data is 30 hours and the median is 26.2 hours. Twenty-four of the families in the sample turned on the television for 15 hours or less for the week. The ...

*Saturday, October 3, 2015 by Anonymous*

**Statistics**

Types of bonds are divided into three categories: good risk, medium risk, and poor risk. Assume that of a total of 13,838 bonds, 7,035 are good risk, 1,388 are medium risk, and the rest are poor risk. One bond is chosen risk? Write only a number as your answer. Round to two ...

*Friday, October 2, 2015 by sam*

**Statistics**

At a local university, when scheduling classes, the probability that there are no evening classes available on a certain day is 0.80. what is that probability that there is at least one evening class available on that day? Write one a number as your answer. Round to two ...

*Friday, October 2, 2015 by sam*

**Statistics**

The Probability that a randomly selected commuter listens to audiobooks during their commute is 0.49. Suppose that a sample of 10 commuters is selected, what is the probability that at most 3 of them listen to audiobooks? Write only a number as your answer. Round to 2 decimal ...

*Friday, October 2, 2015 by sam*

**Statistics**

At a car rental agency, 0.34 of the cars are returned on time. A sample of 13 car rentals is studied. What is the probability that more than 3 of them are returned on time? Write only a number as your answer. Round to 2 decimal places ( for example: 0.24). Do not write as a ...

*Friday, October 2, 2015 by sam*

**Statistics**

In a certain class 27% of the students are left-handed. suppose that a random sample of 53 students is selected. Find the mean number of left-handed students in the class. Round your answer to the nearest integer. Pls help!

*Thursday, October 1, 2015 by sam*

**statistics**

The Economic Policy Institute periodically issues reports on wages of entry level workers. The Institute reported that entry level wages for male college graduates were $21.68 per hour and for female college graduates were $18.80 per hour in 2011 (Economic Policy Institute ...

*Thursday, October 1, 2015 by gabby*

**Statistics**

In a certain class 27% of the students are left-handed. suppose that a random sample of 53 students is selected. Find the mean number of left-handed students in the class. Round your answer to the nearest integer.

*Thursday, October 1, 2015 by Obi*

**Statistics**

At a car rental agency, 0.34 of the cars are returned on time. A sample of 13 car rentals is studied. What is the probability that more than 3 of them are returned on time? Write only a number as your answer. Round to 2 decimal places ( for example: 0.24). Do not write as a ...

*Thursday, October 1, 2015 by Obi*

**Statistics**

The Probability that a randomly selected commuter listens to audiobooks during their commute is 0.49. Suppose that a sample of 10 commuters is selected, what is the probability that at most 3 of them listen to audiobooks? Write only a number as your answer. Round to 2 decimal ...

*Thursday, October 1, 2015 by Obi*

**Statistics**

The probability that a student uses Smarthinking online tutoring on a regular basis is 0.41. In a group of 21 students, what is the probability that exactly 5 of them use Smarthinking Online Tutoring on a regular basis? Write only a number as your answer. Round to 4 decimal ...

*Thursday, October 1, 2015 by Obi*

**Statistics**

An investor is considering an investment in a start-up company. she estimates that she has probability 0.25 of a $ 39,739 loss, probability 0.20 of a $ 19,759 profit, probability 0.15 of a $ 49,068 profit, and probability 0.40 of breaking even (a profit of $0). What is the ...

*Thursday, October 1, 2015 by Obi*

**Statistics**

A number of people were asked how many days they would wait to seek medical treatment if they were suffering pain that interfered with their ability to work. The results are presented in the following table. Number of days: 0 , 1 , 2 , 3 , 4 , 5 Frequency: 27 , 363 , 236 , 107...

*Thursday, October 1, 2015 by Obi*

**Statistics**

The probability of winning something on a single play at a slot machine is 0.29. After 6 plays on the slot machine, What is the probability of winning at least once? Write only a number as your answer. Round your answer to four decimal places (for example: 0.7319). Do not ...

*Thursday, October 1, 2015 by Obi*

**Statistics**

At a local university, when scheduling classes, the probability that there are no evening classes available on a certain day is 0.80. what is that probability that there is at least one evening class available on that day? Write one a number as your answer. Round to two ...

*Thursday, October 1, 2015 by Obi*

**Statistics**

A group of freshmen and sophomore students was selected and each was asked whether they were a member of a student club. The following table was constructed: Student Club No Student Club Freshman 4 15 Sophomore 9 7 Find the probability that a randomly selected student form the...

*Thursday, October 1, 2015 by Obi*

**Statistics**

Types of bonds are divided into three categories: good risk, medium risk, and poor risk. Assume that of a total of 13,838 bonds, 7,035 are good risk, 1,388 are medium risk, and the rest are poor risk. One bond is chosen risk? Write only a number as your answer. Round to two ...

*Thursday, October 1, 2015 by Obi*

**statistics**

if you know the names of the starting batters for a baseball team, what is the probability of randomly selecting a batting order that is used in the beginning of the game

*Tuesday, September 29, 2015 by recie yanders*

**math**

Can someone show me how to answer this question? Please? I would really appreciate any help you can give baseball statistics~~ “According to an Associated Press study, the average MLB salary will break the $4 million mark for the first time in 2015, continuing a trend ...

*Tuesday, September 29, 2015 by Abby *

**Statistics (Central Limit Theorem)**

Does the central limit theorem apply to non-normally distributed variables? Why?

*Tuesday, September 29, 2015 by Zam*

**math**

Can someone show me how to answer this question? Please? I would really appreciate any help you can give baseball statistics~~ “According to an Associated Press study, the average MLB salary will break the $4 million mark for the first time in 2015, continuing a trend ...

*Monday, September 28, 2015 by Abby *

**math**

Can someone show me how to answer this question? Please? I would really appreciate any help you can give baseball statistics~~ “According to an Associated Press study, the average MLB salary will break the $4 million mark for the first time in 2015, continuing a trend ...

*Monday, September 28, 2015 by Abby *

**Statistics (Central Limit Theorem)**

Does the central limit theorem apply to non-normally distributed variables? Why?

*Sunday, September 27, 2015 by Zam*

**Statistics**

The mean salary of 8 employees is $36000 and the median is $32000. This highest-paid employee gets a $2000 raise. What is the new mean salary of the 8 employees? median doesn't change. I just can't figure out the mean. I tried (36000+8000/8) but it wasn't right.

*Friday, September 25, 2015 by Anonymous*

**Statistics**

The mean salary of 8 employees is $36000 and the median is $32000. This highest-paid employee gets a $2000 raise. What is the new mean salary of the 8 employees? What is the new median salary of the 8 employees?

*Friday, September 25, 2015 by Anonymous*

**statistics **

A study was conducted in which the teachers were asked to rate students for a particular trait on a ten point scale. With the help of data given below find out whether significant difference exists in the rating of the students by the teachers. Teachers Students A B C D E F G ...

*Friday, September 25, 2015 by Saju*

**statistics **

With the help of following data, determine both the regression equations Psychology (X): Mean= 30, Standard deviation=1.6 Sociology (Y): Mean= 25, Standard deviation= 1.7 Coefficient of correlation = 0.95

*Friday, September 25, 2015 by Saju*

**statistics **

A study was conducted in which the teachers were asked to rate students for a particular trait on a ten point scale. With the help of data given below find out whether significant difference exists in the rating of the students by the teachers.Teachers Students A B C D E F G X...

*Friday, September 25, 2015 by Saju*

**computer programming**

Write a C++ pogram for the following Employee Name and 12 months’ salary. Salary starts with $5000 per month and increments every month by 10% of previous month salary. At the end of the year, the employee is paid a 5% bonus on top of the yearly salary. Compute the ...

*Tuesday, September 22, 2015 by Gokul*

**statistics**

Pharmaceutical companies advertise for the birth control pill an annual efficacy of 98.6% in preventing pregnancy. However, under typical use the real efficacy is only about 95%. That is, 5% of women taking the pill for a year will experience an unplanned pregnancy that year. ...

*Monday, September 21, 2015 by angelica*

**probability **

The National Center for Educational Statistics reported that in 2009 the ACT college placement and admission examination were normally distributed and had a mean of 21.1 and standard deviation of 5.1. A college requires applicants to have an ACT score in the top 20% of all ...

*Monday, September 21, 2015 by matt*

**Business Statistics**

The quality control manager at a light bulb factory needs to estimate the mean life of a large shipment of light bulbs. The manufacturer's specifications are that the standard deviations is 100 hours. A random sample of 64 light bulbs indicated a sample mean life of 350 ...

*Sunday, September 20, 2015 by Tim*

**Statistics**

b. What is the probability of randomly generating a 7 from the numbers 2 to 12 inclusive?

*Sunday, September 20, 2015 by Joe*

**statistics**

suppose that from 8 students, we want to take a committee of students? How many committees of 3 can be selected? How many of 4?

*Sunday, September 20, 2015 by Danielle*

**statistics**

what is mock data? And how does it work or what do you do??

*Saturday, September 19, 2015 by Anoymous*