Question 1

A population contains 14 members.The total number of samples of size 8 that you can select (without replacement)from this population is:

Accepted Answer

The answer of A population contains 14 members.The total number...

Question 2

Suppose you are analyzing four different brands of soda.The sodium content,in milligrams,of one can of each of these brands has a distribution with a mean of 45.2 mg and a standard deviation of 8.8600 mg.You take a random sample of 2 cans from a large supply of cans including all four brands of soda.Let   be the mean of this sample.What are the mean and standard deviation of the sampling distribution of   ?

Accepted Answer

Part A: The mean is 45.20 (rou

Question 3

In a sample of 859 adults,437 are in favor of banning all advertisements relating to alcohol.The proportion of these adults who are in favor of banning all advertisements relating to alcohol,rounded to three decimal places,is:

Accepted Answer

The answer of In a sample of 859 adults,437 are...

Question 4

A population consists of five elements: 5,6,8,10,and 13.You choose a random sample of three elements from this population (without replacement).Which of the following is not a possible value of the sample mean?

Accepted Answer

A) 6.33 
B) 8.00 
C) 9.33 
D) 10.67 
A) 6.33 
B) 8.00 
C) 9.33 
D) 10.67

Question 5

Use the following to answer questions :
Suppose that 6.5% or all persons are allergic to penicillin .A sample of 561 persons is selected.
-The probability that 7.5% to 9% of persons in a the sample will be allergic to penicillin,rounded to four decimal places,is approximately:

Accepted Answer

The answer of Use the following to answer questions :
Suppose...

Question 6

A population has a mean of 60.5 and a standard deviation of 13.5.Assuming   ,the probability,rounded to four decimal places,that the sample mean of a sample of size 35 elements selected from this populations will be between 62.5 and 67.1 is:

Accepted Answer

The answer of A population has a mean of 60.5...

Question 7

For a continuous random variable x,the population mean and the population standard deviation are 69 and 15,respectively.Assuming   ,the standard deviation of the sampling distribution of the sample mean for a sample of 16 elements taken from this population,rounded to two decimals,is:

Accepted Answer

The answer of For a continuous random variable x,the population...

Question 8

If the population from which samples are drawn is normally distributed,then the sampling distribution of the sample mean is:

Accepted Answer

A) not normally distributed 
B) normally distributed if n is 30 or larger 
C) always normally distributed 
D) normally distributed if n is less than 30 
A) not normally distributed 
B) normally distributed if n is 30 or larger 
C) always normally distributed 
D) normally distributed if n is less than 30

Question 9

The probability distribution of a sample statistic is the:

Accepted Answer

A) frequency distribution of that statistic 
B) binomial distribution of that statistic 
C) sampling distribution of that statistic 
D) Poisson distribution of that statistic 
A) frequency distribution of that statistic 
B) binomial distribution of that statistic 
C) sampling distribution of that statistic 
D) Poisson distribution of that statistic

Question 10

According to the Central Limit Theorem,the sampling distribution of the sample mean is approximately normal,irrespective of the shape of the population distribution,if:

Accepted Answer

A) n is 30 or larger 
B) n is less than 30 
C) np and nq are both greater than 5 
D) n is 50 or larger 
A) n is 30 or larger 
B) n is less than 30 
C) np and nq are both greater than 5 
D) n is 50 or larger

Question 11

The number of hours spent per week on household chores by all adults has a mean of 28.1 hours and a standard deviation of 6.0 hours.The probability,rounded to four decimal places,that the mean number of hours spent per week on household chores by a sample of 53 adults will be more than 26.75 is:

Accepted Answer

The answer of The number of hours spent per week...

Question 12

A continuous random variable x has a left-skewed distribution with a mean of 101 and a standard deviation of 72.The sampling distribution of the sample mean for a sample of 64 elements has what mean and standard deviation?

Accepted Answer

Mean of the distribution of th

Question 13

The following table shows the population probability distribution of x,the random variable representing the price per ticket,in dollars,for 20 upcoming concerts at a certain community's civic center.
   How many of the 20 concerts will cost $53 per ticket?

Accepted Answer

The answer of The following table shows the population probability...

Question 14

The standard deviation of the sampling distribution of the sample proportion is equal to:

Accepted Answer

A) the population standard deviation divided by the square root of n 
B) the population standard deviation divided by n 
C) the square root of   
D)    
A) the population standard deviation divided by the square root of n 
B) the population standard deviation divided by n 
C) the square root of   
D)

Question 15

The mean of the sampling distribution of the sample proportion is equal to the population:

Accepted Answer

A) mean 
B) mean divided by n 
C) proportion 
D) proportion divided by n 
A) mean 
B) mean divided by n 
C) proportion 
D) proportion divided by n

Question 16

As the sample size increases,the standard deviation of the sampling distribution of the sample mean:

Accepted Answer

A) increases 
B) decreases 
C) remains the same 
D) Unable to determine 
A) increases 
B) decreases 
C) remains the same 
D) Unable to determine

A population contains 14 members.The total number of samples of size 8 that you can select (without replacement)from this population is:

In a sample of 859 adults,437 are in favor of banning all advertisements relating to alcohol.The proportion of these adults who are in favor of banning all advertisements relating to alcohol,rounded to three decimal places,is:

A population consists of five elements: 5,6,8,10,and 13.You choose a random sample of three elements from this population (without replacement).Which of the following is not a possible value of the sample mean?

Use the following to answer questions : Suppose that 6.5% or all persons are allergic to penicillin .A sample of 561 persons is selected. -The probability that 7.5% to 9% of persons in a the sample will be allergic to penicillin,rounded to four decimal places,is approximately:

A population has a mean of 60.5 and a standard deviation of 13.5.Assuming ,the probability,rounded to four decimal places,that the sample mean of a sample of size 35 elements selected from this populations will be between 62.5 and 67.1 is:

For a continuous random variable x,the population mean and the population standard deviation are 69 and 15,respectively.Assuming ,the standard deviation of the sampling distribution of the sample mean for a sample of 16 elements taken from this population,rounded to two decimals,is:

If the population from which samples are drawn is normally distributed,then the sampling distribution of the sample mean is:

The probability distribution of a sample statistic is the:

According to the Central Limit Theorem,the sampling distribution of the sample mean is approximately normal,irrespective of the shape of the population distribution,if:

The number of hours spent per week on household chores by all adults has a mean of 28.1 hours and a standard deviation of 6.0 hours.The probability,rounded to four decimal places,that the mean number of hours spent per week on household chores by a sample of 53 adults will be more than 26.75 is:

A continuous random variable x has a left-skewed distribution with a mean of 101 and a standard deviation of 72.The sampling distribution of the sample mean for a sample of 64 elements has what mean and standard deviation?

The following table shows the population probability distribution of x,the random variable representing the price per ticket,in dollars,for 20 upcoming concerts at a certain community's civic center. How many of the 20 concerts will cost $53 per ticket?

The standard deviation of the sampling distribution of the sample proportion is equal to:

The mean of the sampling distribution of the sample proportion is equal to the population:

As the sample size increases,the standard deviation of the sampling distribution of the sample mean:

Introduction

Organizing and Graphing Data

Numerical Descriptive Measures

Probability

Discrete Random Variables and Their Probability Distribution

Continuous Random Variables and the Normal Distribution

Estimation of the Mean and Proportion

Hypothesis Tests About the Mean and Proportion

Estimation and Hypothesis Testing: Two Populations

Chi-Square Tests

Analysis of Variance

Simple Linear Regression

Filters

Exam 7: Sampling Distributions

A population contains 14 members.The total number of samples of size 8 that you can select (without replacement)from this population is:

In a sample of 859 adults,437 are in favor of banning all advertisements relating to alcohol.The proportion of these adults who are in favor of banning all advertisements relating to alcohol,rounded to three decimal places,is:

A population consists of five elements: 5,6,8,10,and 13.You choose a random sample of three elements from this population (without replacement).Which of the following is not a possible value of the sample mean?

Use the following to answer questions : Suppose that 6.5% or all persons are allergic to penicillin .A sample of 561 persons is selected. -The probability that 7.5% to 9% of persons in a the sample will be allergic to penicillin,rounded to four decimal places,is approximately:

A population has a mean of 60.5 and a standard deviation of 13.5.Assuming ,the probability,rounded to four decimal places,that the sample mean of a sample of size 35 elements selected from this populations will be between 62.5 and 67.1 is:

For a continuous random variable x,the population mean and the population standard deviation are 69 and 15,respectively.Assuming ,the standard deviation of the sampling distribution of the sample mean for a sample of 16 elements taken from this population,rounded to two decimals,is:

If the population from which samples are drawn is normally distributed,then the sampling distribution of the sample mean is:

The probability distribution of a sample statistic is the:

According to the Central Limit Theorem,the sampling distribution of the sample mean is approximately normal,irrespective of the shape of the population distribution,if:

The number of hours spent per week on household chores by all adults has a mean of 28.1 hours and a standard deviation of 6.0 hours.The probability,rounded to four decimal places,that the mean number of hours spent per week on household chores by a sample of 53 adults will be more than 26.75 is:

A continuous random variable x has a left-skewed distribution with a mean of 101 and a standard deviation of 72.The sampling distribution of the sample mean for a sample of 64 elements has what mean and standard deviation?

The following table shows the population probability distribution of x,the random variable representing the price per ticket,in dollars,for 20 upcoming concerts at a certain community's civic center. How many of the 20 concerts will cost $53 per ticket?

The standard deviation of the sampling distribution of the sample proportion is equal to:

The mean of the sampling distribution of the sample proportion is equal to the population:

As the sample size increases,the standard deviation of the sampling distribution of the sample mean:

Introduction

Organizing and Graphing Data

Numerical Descriptive Measures

Probability

Discrete Random Variables and Their Probability Distribution

Continuous Random Variables and the Normal Distribution

Estimation of the Mean and Proportion

Hypothesis Tests About the Mean and Proportion

Estimation and Hypothesis Testing: Two Populations

Chi-Square Tests

Analysis of Variance

Simple Linear Regression

Filters