To test: Whether the proportions of the shoplifters turned over to police is greater than 50%.

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Answer 1

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Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

Chapter 7, Problem 7.134ACI

a.

To determine

To test: Whether the proportions of the shoplifters turned over to police is greater than 50%.

b.

To determine

To test: Whether the sample size is large enough to use the normal approximation.

c.

To determine

To make: The appropriate conclusion using the p-value.

d.

To determine

To find: The value of α that helps to reject the null hypothesis.

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Given the following sample data values: 7, 12, 15, 9, 15, 13, 12, 10, 18,12 Find the following: a) Σ x= b) x² = c) x = n d) Median = e) Midrange x = (Enter a whole number) (Enter a whole number) (use one decimal place accuracy) (use one decimal place accuracy) (use one decimal place accuracy) f) the range= g) the variance, s² (Enter a whole number) f) Standard Deviation, s = (use one decimal place accuracy) Use the formula s² ·Σx² -(x)² n(n-1) nΣ x²-(x)² 2 Use the formula s = n(n-1) (use one decimal place accuracy)

Table of hours of television watched per week: 11 15 24 34 36 22 20 30 12 32 24 36 42 36 42 26 37 39 48 35 26 29 27 81276 40 54 47 KARKE 31 35 42 75 35 46 36 42 65 28 54 65 28 23 28 23669 34 43 35 36 16 19 19 28212 Using the data above, construct a frequency table according the following classes: Number of Hours Frequency Relative Frequency 10-19 20-29 |30-39 40-49 50-59 60-69 70-79 80-89 From the frequency table above, find a) the lower class limits b) the upper class limits c) the class width d) the class boundaries Statistics 300 Frequency Tables and Pictures of Data, page 2 Using your frequency table, construct a frequency and a relative frequency histogram labeling both axes.

Answer 2

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Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

Chapter 7, Problem 7.134ACI

a.

To determine

To test: Whether the proportions of the shoplifters turned over to police is greater than 50%.

b.

To determine

To test: Whether the sample size is large enough to use the normal approximation.

c.

To determine

To make: The appropriate conclusion using the p-value.

d.

To determine

To find: The value of α that helps to reject the null hypothesis.

Expert Solution & Answer

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Answer 3

Question

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

Chapter 7, Problem 7.134ACI

a.

To determine

To test: Whether the proportions of the shoplifters turned over to police is greater than 50%.

b.

To determine

To test: Whether the sample size is large enough to use the normal approximation.

c.

To determine

To make: The appropriate conclusion using the p-value.

d.

To determine

To find: The value of α that helps to reject the null hypothesis.

Expert Solution & Answer

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Answer 4

Question

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

Chapter 7, Problem 7.134ACI

a.

To determine

To test: Whether the proportions of the shoplifters turned over to police is greater than 50%.

b.

To determine

To test: Whether the sample size is large enough to use the normal approximation.

c.

To determine

To make: The appropriate conclusion using the p-value.

d.

To determine

To find: The value of α that helps to reject the null hypothesis.

Expert Solution & Answer

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Answer 5

Chapter 7, Problem 7.134ACI

a.

To determine

To test: Whether the proportions of the shoplifters turned over to police is greater than 50%.

b.

To determine

To test: Whether the sample size is large enough to use the normal approximation.

c.

To determine

To make: The appropriate conclusion using the p-value.

d.

To determine

To find: The value of α that helps to reject the null hypothesis.

Answer 6

Chapter 7, Problem 7.134ACI

a.

To determine

To test: Whether the proportions of the shoplifters turned over to police is greater than 50%.

Answer 7

Chapter 7, Problem 7.134ACI

a.

To determine

To test: Whether the proportions of the shoplifters turned over to police is greater than 50%.

Answer 8

b.

To determine

To test: Whether the sample size is large enough to use the normal approximation.

Answer 9

b.

To determine

To test: Whether the sample size is large enough to use the normal approximation.

Answer 10

c.

To determine

To make: The appropriate conclusion using the p-value.

Answer 11

c.

To determine

To make: The appropriate conclusion using the p-value.

Answer 12

d.

To determine

To find: The value of α that helps to reject the null hypothesis.

Answer 13

d.

To determine

To find: The value of α that helps to reject the null hypothesis.

Answer 14

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Answer 15

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Answer 16

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Answer 17

Ch. 7.2 - Which hypothesis, the null or the alternative, is...Ch. 7.2 - Which element of a test of hypothesis is used to...Ch. 7.2 - What is the level of significance of a test of...Ch. 7.2 - What is the difference between Type I and Type II...Ch. 7.2 - List the four possible results of the combinations...Ch. 7.2 - We reject the null hypothesis when the test...Ch. 7.2 - If you test a hypothesis and reject the null...Ch. 7.2 - For each of the following rejection regions,...Ch. 7.2 - Use the applet Hypothesis Test for a Mean to...Ch. 7.2 - Americans favorite sport. The Harris Poll...

To test: Whether the proportions of the shoplifters turned over to police is greater than 50%.

Solution Summary: The author states that there is no sufficient evidence to infer that the proportions of the shoplifters turned over to police is greater than 50%.

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To test: Whether the proportions of the shoplifters turned over to police is greater than 50%.

To test: Whether the sample size is large enough to use the normal approximation.

To make: The appropriate conclusion using the p-value.

To find: The value of α that helps to reject the null hypothesis.

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Chapter 7 Solutions