Exam 29: Sampling From Finite Populations

TABLE 7-7 Times spent studying by students in the week before final exams follow a normal distribution with standard deviation 8 hours.A random sample of 4 students was taken from a population of 50 in order to estimate the mean study time for the population of all students.Use the finite population correction. -Referring to Table 7-7,5% of all the samples of 4 will have a sample mean of at least how many hours above the population mean?

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Question 1

Correct Answer:

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6.3748

The use of the finite population correction factor when sampling without replacement from finite populations will

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Question 2

Correct Answer:

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TABLE 7-7 Times spent studying by students in the week before final exams follow a normal distribution with standard deviation 8 hours.A random sample of 4 students was taken from a population of 50 in order to estimate the mean study time for the population of all students.Use the finite population correction. -Referring to Table 7-7,what is the standard error of all the sample means?

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Question 3

Correct Answer:

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3.8756

TABLE 7-7 Times spent studying by students in the week before final exams follow a normal distribution with standard deviation 8 hours.A random sample of 4 students was taken from a population of 50 in order to estimate the mean study time for the population of all students.Use the finite population correction. -Referring to Table 7-7,90% of all the samples of 4 will have a sample mean of no more than how many hours from the population mean?

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Question 4

The finite population correction factor is

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Question 5

TABLE 7-8 According to a survey,only 15% of customers who visited the website of a major retail store made a purchase.Random samples of size 50 are selected from a population of 900.Use the finite population correction factor. -Referring to Table 7-8,what is the probability that a random sample of 50 will have at least 30% of customers who will make a purchase after visiting the website?

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Question 6

TABLE 7-8 According to a survey,only 15% of customers who visited the website of a major retail store made a purchase.Random samples of size 50 are selected from a population of 900.Use the finite population correction factor. -True or False: Referring to Table 7-8,the requirements for using a normal distribution to approximate a binomial distribution is fulfilled.

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Question 7

TABLE 7-8 According to a survey,only 15% of customers who visited the website of a major retail store made a purchase.Random samples of size 50 are selected from a population of 900.Use the finite population correction factor. -Referring to Table 7-8,the mean of all the sample proportions of 50 customers who will make a purchase after visiting the website is ________.

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Question 8

TABLE 7-7 Times spent studying by students in the week before final exams follow a normal distribution with standard deviation 8 hours.A random sample of 4 students was taken from a population of 50 in order to estimate the mean study time for the population of all students.Use the finite population correction. -Referring to Table 7-7,what is the probability that the sample mean differs from the population mean by more than 3 hours?

(Short Answer)

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Question 9

TABLE 7-7 Times spent studying by students in the week before final exams follow a normal distribution with standard deviation 8 hours.A random sample of 4 students was taken from a population of 50 in order to estimate the mean study time for the population of all students.Use the finite population correction. -Referring to Table 7-7,what is the probability that the sample mean differs from the population mean by less than 2 hours?

(Short Answer)

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Question 10

TABLE 7-8 According to a survey,only 15% of customers who visited the website of a major retail store made a purchase.Random samples of size 50 are selected from a population of 900.Use the finite population correction factor. -Referring to Table 7-8,90% of the samples will have less than what percentage of customers who will make a purchase after visiting the website?

(Short Answer)

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Question 11

You use the finite population correction factor when

(Multiple Choice)

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Question 12

TABLE 7-8 According to a survey,only 15% of customers who visited the website of a major retail store made a purchase.Random samples of size 50 are selected from a population of 900.Use the finite population correction factor. -Referring to Table 7-8,the standard error of all the sample proportions of customers who will make a purchase after visiting the website is ________.

(Short Answer)

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Question 13

TABLE 7-8 According to a survey,only 15% of customers who visited the website of a major retail store made a purchase.Random samples of size 50 are selected from a population of 900.Use the finite population correction factor. -Referring to Table 7-8,what proportion of the samples will have less than 15% of customers who will make a purchase after visiting the website?

(Short Answer)

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Question 14

TABLE 7-7 Times spent studying by students in the week before final exams follow a normal distribution with standard deviation 8 hours.A random sample of 4 students was taken from a population of 50 in order to estimate the mean study time for the population of all students.Use the finite population correction. -Referring to Table 7-7,80% of all the samples of 4 will have a sample mean of no more than how many hours from the population mean?

(Short Answer)

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Question 15

TABLE 7-7 Times spent studying by students in the week before final exams follow a normal distribution with standard deviation 8 hours.A random sample of 4 students was taken from a population of 50 in order to estimate the mean study time for the population of all students.Use the finite population correction. -Referring to Table 7-7,what is the probability that the sample mean exceeds the population mean by more than 2 hours?

(Short Answer)

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Question 16

TABLE 7-8 According to a survey,only 15% of customers who visited the website of a major retail store made a purchase.Random samples of size 50 are selected from a population of 900.Use the finite population correction factor. -Referring to Table 7-8,90% of the samples will have more than what percentage of customers who will make a purchase after visiting the website?

(Short Answer)

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Question 17

TABLE 7-7 Times spent studying by students in the week before final exams follow a normal distribution with standard deviation 8 hours.A random sample of 4 students was taken from a population of 50 in order to estimate the mean study time for the population of all students.Use the finite population correction. -Referring to Table 7-7,10% of all the samples of 4 will have a sample mean of at least how many hours below the population mean?

(Short Answer)

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Question 18

TABLE 7-7 Times spent studying by students in the week before final exams follow a normal distribution with standard deviation 8 hours.A random sample of 4 students was taken from a population of 50 in order to estimate the mean study time for the population of all students.Use the finite population correction. -Referring to Table 7-7,what is the probability that the sample mean is more than 3 hours below the population mean?

(Short Answer)

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Question 19

TABLE 7-8 According to a survey,only 15% of customers who visited the website of a major retail store made a purchase.Random samples of size 50 are selected from a population of 900.Use the finite population correction factor. -Referring to Table 7-8,what proportion of the samples will have between 20% and 30% of customers who will make a purchase after visiting the website?

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Question 20

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The use of the finite population correction factor when sampling without replacement from finite populations will

The finite population correction factor is

You use the finite population correction factor when

Defining and Collecting Data

Numerical Descriptive Measures

Basic Probability

Discrete Probability Distributions

The Normal Distribution and Other Continuous Distributions

Sampling Distributions

Confidence Interval Estimation

Fundamentals of Hypothesis Testing: One-Sample Tests

Two-Sample Tests

Analysis of Variance

Chi-Square Tests and Nonparametric Tests

Simple Linear Regression

Introduction to Multiple Regression

Multiple Regression Model Building

Time-Series Forecasting

A Roadmap for Analyzing Data

Statistical Applications in Quality Management

Decision Making

Index Numbers

Chi-Square Tests for the Variance or Standard Deviation

Mcnemar Test for the Difference Between Two Proportions Related Samples

The Analysis of Means Anom

The Analysis of Proportions Anop

The Randomized Block Design

The Power of a Test

Estimation and Sample Size Determination for Finite Populations

Application of Confidence Interval Estimation in Auditing

The Normal Approximation to the Binomial Distribution

Counting Rules

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