Deck 8: Sampling Distributions

Question 1

Provide an appropriate response.

Answer 1

A

Question 2

Describe the Distribution of the Sample Mean-Samples from a Population That Is Not Normal

Answer 2

A

Question 3

Provide an appropriate response.

Answer 3

Question 4

Describe the Distribution of the Sample Mean-Samples from a Population That Is Not Normal

Question 5

Describe the Distribution of the Sample Mean-Samples from a Population That Is Not Normal

Question 6

Provide an appropriate response.

Question 7

Provide an appropriate response.

Question 8

Describe the Distribution of the Sample Mean-Samples from a Population That Is Not Normal

Question 9

Provide an appropriate response.

Question 10

Describe the Distribution of the Sample Mean-Samples from a Population That Is Not Normal

Question 11

Provide an appropriate response.

Question 12

Provide an appropriate response.

Question 13

Provide an appropriate response.

Question 14

Provide an appropriate response.

Question 15

Provide an appropriate response.

Question 16

Describe the Distribution of the Sample Mean-Samples from a Population That Is Not Normal

Question 17

Provide an appropriate response.

Question 18

Provide an appropriate response.

Question 19

Provide an appropriate response.
The number of violent crimes committed in a day possesses a distribution with a mean of 3.8 crimes per day and a standard deviation of 2 crimes per day. A random sample of 100 days was observed, and the mean number of crimes for the sample was calculated. Describe the sampling distribution of the sample mean.

A) approximately normal with mean = 3.8 and standard deviation = 0.2
B) approximately normal with mean = 3.8 and standard deviation = 2
C) shape unknown with mean = 3.8 and standard deviation = 2
D) shape unknown with mean = 3.8 and standard deviation = 0.2

Question 20

Provide an appropriate response.
The amount of money collected by a snack bar at a large university has been recorded daily for the past five years. Records indicate that the mean daily amount collected is $1950 and the standard deviation is $500. The distribution is skewed to the right due to several high volume days (including football game days). Suppose that 100 days were randomly selected from the five years and the average amount collected from those days was recorded. Which of the following describes the sampling distribution of the sample mean

A) normally distributed with a mean of $1950 and a standard deviation of $50
B) normally distributed with a mean of $1950 and a standard deviation of $500
C) normally distributed with a mean of $195 and a standard deviation of $50
D) skewed to the right with a mean of $1950 and a standard deviation of $500

Question 21

Describe the Sampling Distribution of a Sample Proportion

Question 22

Describe the Sampling Distribution of a Sample Proportion

Question 23

Describe the Distribution of the Sample Mean-Samples from a Population That Is Not Normal

Question 24

Describe the Sampling Distribution of a Sample Proportion

Question 25

Describe the Distribution of the Sample Mean-Samples from a Population That Is Not Normal
John has six bills of paper money in the following denominations: $1, $5, $10, $20, $50, and $100 If he selects 3 bills at a time what is the probability of selecting a group that has an average value of at least $26

A) 0.55
B) 0.50
C) 0.60
D) 0.45

Question 26

Describe the Sampling Distribution of a Sample Proportion

Question 27

Describe the Distribution of the Sample Mean-Samples from a Population That Is Not Normal
The ages of five randomly chosen cars in a parking garage are determined to be 7, 9, 3, 4, and 6 years old. If we consider this sample of 5 in groups of 3, what is the probability of the population mean falling between 5.5 and 6.5 years

A) 0.5
B) 0.4
C) 0.55
D) 0.6

Question 28

Describe the Distribution of the Sample Mean-Samples from a Population That Is Not Normal
John has six bills of paper money in the following denominations: $1, $5, $10, $20, $50, and $100 If he selects 3 bills at a time what is the probability of selecting a group that has an average value of between $40 and $45

A) 0.15
B) 0.05
C) 0.25
D) 0.20

Question 29

Describe the Sampling Distribution of a Sample Proportion

Question 30

Compute Probabilities of a Sample Proportion

Question 31

Compute Probabilities of a Sample Proportion

Question 32

Describe the Distribution of the Sample Mean-Samples from a Population That Is Not Normal
John has six bills of paper money in the following denominations: $1, $5, $10, $20, $50, and $100 If he selects 3 bills at a time what is the probability of selecting a group that has an average value of equal to or less than $25

A) 0.45
B) 0.86
C) 0.50
D) 0.35

Question 33

Describe the Distribution of the Sample Mean-Samples from a Population That Is Not Normal

Question 34

Describe the Sampling Distribution of a Sample Proportion

Question 35

Describe the Sampling Distribution of a Sample Proportion

Question 36

Describe the Sampling Distribution of a Sample Proportion

Question 37

Describe the Distribution of the Sample Mean-Samples from a Population That Is Not Normal
The ages of five randomly chosen cars in a parking garage are determined to be 7, 9, 3, 4, and 6 years old. If we consider this sample of 5 in groups of 3, what is the probability of the population mean being more than 6 years

A) 0.4
B) 0.5
C) 0.1
D) 0.6

Question 38

Describe the Sampling Distribution of a Sample Proportion

Question 39

Describe the Sampling Distribution of a Sample Proportion

Question 40

Describe the Sampling Distribution of a Sample Proportion

Question 41

Compute Probabilities of a Sample Proportion

Question 42

Compute Probabilities of a Sample Proportion
The National Association of Realtors estimates that 23% of all homes purchased in 2004 were considered investment properties. If a sample of 800 homes sold in 2004 is obtained and it was noted that 248 homes were to be used as investment property, would this be unusual Answer Yes or No.

A) Yes
B) No

Question 43

Compute Probabilities of a Sample Proportion

Question 44

Compute Probabilities of a Sample Proportion

Question 45

Compute Probabilities of a Sample Proportion
The National Association of Realtors estimates that 23% of all homes purchased in 2004 were considered investment properties. If a sample of 800 homes sold in 2004 is obtained what is the probability that between 175 and 200 homes are going to be used as investment property

A) 0.1335
B) 0.9099
C) 0.7764
D) 0.2236

Question 46

Compute Probabilities of a Sample Proportion