Find the probability that a mobile subscriber spends less than 321 minutes watching a video.

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Answer 1

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 6, Problem 11PS

a.

To determine

Find the probability that a mobile subscriber spends less than 321 minutes watching a video.

b.

To determine

Find the probability that the mobile subscriber spends between 320 minutes and 471 minutes watching a video.

c.

To determine

Find the probability that the mobile subscriber spends more than 471 minutes watching a video.

d.

To determine

Determine the number of minutes spent watching a video by one percent of the subscribers.

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3. Bayesian Inference – Updating Beliefs A medical test for a rare disease has the following characteristics: Sensitivity (true positive rate): 99% Specificity (true negative rate): 98% The disease occurs in 0.5% of the population. A patient receives a positive test result. Questions: a) Define the relevant events and use Bayes’ Theorem to compute the probability that the patient actually has the disease.b) Explain why the result might seem counterintuitive, despite the high sensitivity and specificity.c) Discuss how prior probabilities influence posterior beliefs in Bayesian inference.d) Suppose a second, independent test with the same accuracy is conducted and is also positive. Update the probability that the patient has the disease.

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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 6, Problem 11PS

a.

To determine

Find the probability that a mobile subscriber spends less than 321 minutes watching a video.

b.

To determine

Find the probability that the mobile subscriber spends between 320 minutes and 471 minutes watching a video.

c.

To determine

Find the probability that the mobile subscriber spends more than 471 minutes watching a video.

d.

To determine

Determine the number of minutes spent watching a video by one percent of the subscribers.

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 6, Problem 11PS

a.

To determine

Find the probability that a mobile subscriber spends less than 321 minutes watching a video.

b.

To determine

Find the probability that the mobile subscriber spends between 320 minutes and 471 minutes watching a video.

c.

To determine

Find the probability that the mobile subscriber spends more than 471 minutes watching a video.

d.

To determine

Determine the number of minutes spent watching a video by one percent of the subscribers.

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 6, Problem 11PS

a.

To determine

Find the probability that a mobile subscriber spends less than 321 minutes watching a video.

b.

To determine

Find the probability that the mobile subscriber spends between 320 minutes and 471 minutes watching a video.

c.

To determine

Find the probability that the mobile subscriber spends more than 471 minutes watching a video.

d.

To determine

Determine the number of minutes spent watching a video by one percent of the subscribers.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 5

Chapter 6, Problem 11PS

a.

To determine

Find the probability that a mobile subscriber spends less than 321 minutes watching a video.

b.

To determine

Find the probability that the mobile subscriber spends between 320 minutes and 471 minutes watching a video.

c.

To determine

Find the probability that the mobile subscriber spends more than 471 minutes watching a video.

d.

To determine

Determine the number of minutes spent watching a video by one percent of the subscribers.

Answer 6

Chapter 6, Problem 11PS

a.

To determine

Find the probability that a mobile subscriber spends less than 321 minutes watching a video.

Answer 7

Chapter 6, Problem 11PS

a.

To determine

Find the probability that a mobile subscriber spends less than 321 minutes watching a video.

Answer 8

b.

To determine

Find the probability that the mobile subscriber spends between 320 minutes and 471 minutes watching a video.

Answer 9

b.

To determine

Find the probability that the mobile subscriber spends between 320 minutes and 471 minutes watching a video.

Answer 10

c.

To determine

Find the probability that the mobile subscriber spends more than 471 minutes watching a video.

Answer 11

c.

To determine

Find the probability that the mobile subscriber spends more than 471 minutes watching a video.

Answer 12

d.

To determine

Determine the number of minutes spent watching a video by one percent of the subscribers.

Answer 13

d.

To determine

Determine the number of minutes spent watching a video by one percent of the subscribers.

Answer 14

Expert Solution & Answer

Answer 15

Expert Solution & Answer

Answer 16

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Answer 17

Ch. 6 - Given a standardized normal distribution (with a...Ch. 6 - Given a standard normal distribution (with a mean...Ch. 6 - Given a standardized normal distribution (with a...Ch. 6 - Given a standardized normal distribution (with a...Ch. 6 - Given a normal distribution with =100 and =10,...Ch. 6 - Given a normal distribution with =50 and =4, what...Ch. 6 - Prob. 7PS Ch. 6 - Tobyâ€™s Trucking Company determined that the...Ch. 6 - Prob. 9PS Ch. 6 - A Set of final examination grades in an...

Find the probability that a mobile subscriber spends less than 321 minutes watching a video.

Solution Summary: The author calculates the probability that a mobile subscriber spends less than 321 minutes watching video. The required probability is 0.0668.

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Find the probability that a mobile subscriber spends less than 321 minutes watching a video.

Find the probability that the mobile subscriber spends between 320 minutes and 471 minutes watching a video.

Find the probability that the mobile subscriber spends more than 471 minutes watching a video.

Determine the number of minutes spent watching a video by one percent of the subscribers.

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Chapter 6 Solutions