Check whether it is reasonable to use the normal model to describe the possible distribution of the proportion of the group that has left brain language control.

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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 R, Problem 5.16RE

a.

To determine

Check whether it is reasonable to use the normal model to describe the possible distribution of the proportion of the group that has left brain language control.

b.

To determine

Compute the probability that our group has at least 75% left brainers.

c.

To determine

Explain without calculating the probability would the probability be higher lower or about the same, if the group consisted of 100 people.

d.

To determine

Explain how large a group would almost guarantee at least 75% left brainers.

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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 R, Problem 5.16RE

a.

To determine

Check whether it is reasonable to use the normal model to describe the possible distribution of the proportion of the group that has left brain language control.

b.

To determine

Compute the probability that our group has at least 75% left brainers.

c.

To determine

Explain without calculating the probability would the probability be higher lower or about the same, if the group consisted of 100 people.

d.

To determine

Explain how large a group would almost guarantee at least 75% left brainers.

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 R, Problem 5.16RE

a.

To determine

Check whether it is reasonable to use the normal model to describe the possible distribution of the proportion of the group that has left brain language control.

b.

To determine

Compute the probability that our group has at least 75% left brainers.

c.

To determine

Explain without calculating the probability would the probability be higher lower or about the same, if the group consisted of 100 people.

d.

To determine

Explain how large a group would almost guarantee at least 75% left brainers.

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 R, Problem 5.16RE

a.

To determine

Check whether it is reasonable to use the normal model to describe the possible distribution of the proportion of the group that has left brain language control.

b.

To determine

Compute the probability that our group has at least 75% left brainers.

c.

To determine

Explain without calculating the probability would the probability be higher lower or about the same, if the group consisted of 100 people.

d.

To determine

Explain how large a group would almost guarantee at least 75% left brainers.

Expert Solution & Answer

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Check out a sample textbook solution

See solution

Answer 5

Chapter R, Problem 5.16RE

a.

To determine

Check whether it is reasonable to use the normal model to describe the possible distribution of the proportion of the group that has left brain language control.

b.

To determine

Compute the probability that our group has at least 75% left brainers.

c.

To determine

Explain without calculating the probability would the probability be higher lower or about the same, if the group consisted of 100 people.

d.

To determine

Explain how large a group would almost guarantee at least 75% left brainers.

Answer 6

Chapter R, Problem 5.16RE

a.

To determine

Check whether it is reasonable to use the normal model to describe the possible distribution of the proportion of the group that has left brain language control.

Answer 7

Chapter R, Problem 5.16RE

a.

To determine

Check whether it is reasonable to use the normal model to describe the possible distribution of the proportion of the group that has left brain language control.

Answer 8

b.

To determine

Compute the probability that our group has at least 75% left brainers.

Answer 9

b.

To determine

Compute the probability that our group has at least 75% left brainers.

Answer 10

c.

To determine

Explain without calculating the probability would the probability be higher lower or about the same, if the group consisted of 100 people.

Answer 11

c.

To determine

Explain without calculating the probability would the probability be higher lower or about the same, if the group consisted of 100 people.

Answer 12

d.

To determine

Explain how large a group would almost guarantee at least 75% left brainers.

Answer 13

d.

To determine

Explain how large a group would almost guarantee at least 75% left brainers.

Answer 14

Expert Solution & Answer

Answer 15

Expert Solution & Answer

Answer 16

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Answer 17

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Check whether it is reasonable to use the normal model to describe the possible distribution of the proportion of the group that has left brain language control.

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Check whether it is reasonable to use the normal model to describe the possible distribution of the proportion of the group that has left brain language control.

Compute the probability that our group has at least 75% left brainers.

Explain without calculating the probability would the probability be higher lower or about the same, if the group consisted of 100 people.

Explain how large a group would almost guarantee at least 75% left brainers.

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Chapter R Solutions