The margin of error for 95% confidence if the sample size is 100 young women.

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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 18.2, Problem 18.6AYK

(a)

To determine

To find: The margin of error for 95% confidence if the sample size is 100 young women.

To determine

(b)

To find: The margin of error for 95% confidence if the sample size is 400 young women.

To find: The margin of error for 95% confidence if the sample size is 1,600 young women.

(c)

To determine

To compare: The three margins of error.

To give: The reason for increasing the sample size change in the margin of error of a confidence interval when the confidence level and population standard deviation remain the same.

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Answer 2

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 18.2, Problem 18.6AYK

(a)

To determine

To find: The margin of error for 95% confidence if the sample size is 100 young women.

To determine

(b)

To find: The margin of error for 95% confidence if the sample size is 400 young women.

To find: The margin of error for 95% confidence if the sample size is 1,600 young women.

(c)

To determine

To compare: The three margins of error.

To give: The reason for increasing the sample size change in the margin of error of a confidence interval when the confidence level and population standard deviation remain the same.

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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 18.2, Problem 18.6AYK

(a)

To determine

To find: The margin of error for 95% confidence if the sample size is 100 young women.

To determine

(b)

To find: The margin of error for 95% confidence if the sample size is 400 young women.

To find: The margin of error for 95% confidence if the sample size is 1,600 young women.

(c)

To determine

To compare: The three margins of error.

To give: The reason for increasing the sample size change in the margin of error of a confidence interval when the confidence level and population standard deviation remain the same.

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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 18.2, Problem 18.6AYK

(a)

To determine

To find: The margin of error for 95% confidence if the sample size is 100 young women.

To determine

(b)

To find: The margin of error for 95% confidence if the sample size is 400 young women.

To find: The margin of error for 95% confidence if the sample size is 1,600 young women.

(c)

To determine

To compare: The three margins of error.

To give: The reason for increasing the sample size change in the margin of error of a confidence interval when the confidence level and population standard deviation remain the same.

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Answer 5

Chapter 18.2, Problem 18.6AYK

(a)

To determine

To find: The margin of error for 95% confidence if the sample size is 100 young women.

To determine

(b)

To find: The margin of error for 95% confidence if the sample size is 400 young women.

To find: The margin of error for 95% confidence if the sample size is 1,600 young women.

(c)

To determine

To compare: The three margins of error.

To give: The reason for increasing the sample size change in the margin of error of a confidence interval when the confidence level and population standard deviation remain the same.

Answer 6

Chapter 18.2, Problem 18.6AYK

(a)

To determine

To find: The margin of error for 95% confidence if the sample size is 100 young women.

Answer 7

Chapter 18.2, Problem 18.6AYK

(a)

To determine

To find: The margin of error for 95% confidence if the sample size is 100 young women.

Answer 8

To determine

(b)

To find: The margin of error for 95% confidence if the sample size is 400 young women.

To find: The margin of error for 95% confidence if the sample size is 1,600 young women.

Answer 9

To determine

(b)

To find: The margin of error for 95% confidence if the sample size is 400 young women.

To find: The margin of error for 95% confidence if the sample size is 1,600 young women.

Answer 10

(c)

To determine

To compare: The three margins of error.

To give: The reason for increasing the sample size change in the margin of error of a confidence interval when the confidence level and population standard deviation remain the same.

Answer 11

(c)

To determine

To compare: The three margins of error.

To give: The reason for increasing the sample size change in the margin of error of a confidence interval when the confidence level and population standard deviation remain the same.

Answer 12

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Answer 13

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Answer 14

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Answer 15

Ch. 18.1 - Prob. 18.1AYK Ch. 18.1 - Prob. 18.2AYK Ch. 18.1 - Prob. 18.3AYK Ch. 18.2 - Prob. 18.4AYK Ch. 18.2 - Prob. 18.5AYK Ch. 18.2 - Prob. 18.6AYK Ch. 18.2 - Prob. 18.7AYK Ch. 18.3 - Prob. 18.8AYK Ch. 18.3 - Prob. 18.9AYK Ch. 18.3 - Prob. 18.10AYK

The margin of error for 95% confidence if the sample size is 100 young women.

To find: The margin of error for 95% confidence if the sample size is 100 young women.

(b) To find: The margin of error for 95% confidence if the sample size is 400 young women. To find: The margin of error for 95% confidence if the sample size is 1,600 young women.

To compare: The three margins of error. To give: The reason for increasing the sample size change in the margin of error of a confidence interval when the confidence level and population standard deviation remain the same.

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Chapter 18 Solutions

(b)

To find: The margin of error for 95% confidence if the sample size is 400 young women.

To find: The margin of error for 95% confidence if the sample size is 1,600 young women.

To compare: The three margins of error.

To give: The reason for increasing the sample size change in the margin of error of a confidence interval when the confidence level and population standard deviation remain the same.