Calculate 95 % confidence interval for the population mean Facebook penetration.

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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 8, Problem 24PS

a.

To determine

Calculate 95% confidence interval for the population mean Facebook penetration.

b.

To determine

State the required assumption about the population distribution to calculate confidence interval in part (a).

c.

To determine

State the validity of normality assumption.

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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 8, Problem 24PS

a.

To determine

Calculate 95% confidence interval for the population mean Facebook penetration.

b.

To determine

State the required assumption about the population distribution to calculate confidence interval in part (a).

c.

To determine

State the validity of normality assumption.

Expert Solution & Answer

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Check out a sample textbook solution

See solution

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 8, Problem 24PS

a.

To determine

Calculate 95% confidence interval for the population mean Facebook penetration.

b.

To determine

State the required assumption about the population distribution to calculate confidence interval in part (a).

c.

To determine

State the validity of normality assumption.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

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 8, Problem 24PS

a.

To determine

Calculate 95% confidence interval for the population mean Facebook penetration.

b.

To determine

State the required assumption about the population distribution to calculate confidence interval in part (a).

c.

To determine

State the validity of normality assumption.

Expert Solution & Answer

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Check out a sample textbook solution

See solution

Answer 5

Chapter 8, Problem 24PS

a.

To determine

Calculate 95% confidence interval for the population mean Facebook penetration.

b.

To determine

State the required assumption about the population distribution to calculate confidence interval in part (a).

c.

To determine

State the validity of normality assumption.

Answer 6

Chapter 8, Problem 24PS

a.

To determine

Calculate 95% confidence interval for the population mean Facebook penetration.

Answer 7

Chapter 8, Problem 24PS

a.

To determine

Calculate 95% confidence interval for the population mean Facebook penetration.

Answer 8

b.

To determine

State the required assumption about the population distribution to calculate confidence interval in part (a).

Answer 9

b.

To determine

State the required assumption about the population distribution to calculate confidence interval in part (a).

Answer 10

c.

To determine

State the validity of normality assumption.

Answer 11

c.

To determine

State the validity of normality assumption.

Answer 12

Expert Solution & Answer

Answer 13

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Answer 14

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Answer 15

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Calculate 95 % confidence interval for the population mean Facebook penetration.

Solution Summary: The author explains how to calculate the 95% confidence interval for the population mean Facebook penetration for 15 countries.

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Calculate 95% confidence interval for the population mean Facebook penetration.

State the required assumption about the population distribution to calculate confidence interval in part (a).

State the validity of normality assumption.

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