Check whether there is evidence to conclude that the mean concentration is greater than 41.

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Answer 1

Question

Definition Definition Middle value of a data set. The median divides a data set into two halves, and it also called the 50th percentile. The median is much less affected by outliers and skewed data than the mean. If the number of elements in a dataset is odd, then the middlemost element of the data arranged in ascending or descending order is the median. If the number of elements in the dataset is even, the average of the two central elements of the arranged data is the median of the set. For example, if a dataset has five items—12, 13, 21, 27, 31—the median is the third item in ascending order, or 21. If a dataset has six items—12, 13, 21, 27, 31, 33—the median is the average of the third (21) and fourth (27) items. It is calculated as follows: (21 + 27) / 2 = 24.

Chapter 6.9, Problem 4E

a.

To determine

Check whether there is evidence to conclude that the mean concentration is greater than 41.

b.

To determine

Check whether there is evidence to conclude that the mean concentration is less than 43.

c.

To determine

Check whether there is evidence to conclude that the mean concentration differs from 44.

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Answer 2

Question

Definition Definition Middle value of a data set. The median divides a data set into two halves, and it also called the 50th percentile. The median is much less affected by outliers and skewed data than the mean. If the number of elements in a dataset is odd, then the middlemost element of the data arranged in ascending or descending order is the median. If the number of elements in the dataset is even, the average of the two central elements of the arranged data is the median of the set. For example, if a dataset has five items—12, 13, 21, 27, 31—the median is the third item in ascending order, or 21. If a dataset has six items—12, 13, 21, 27, 31, 33—the median is the average of the third (21) and fourth (27) items. It is calculated as follows: (21 + 27) / 2 = 24.

Chapter 6.9, Problem 4E

a.

To determine

Check whether there is evidence to conclude that the mean concentration is greater than 41.

b.

To determine

Check whether there is evidence to conclude that the mean concentration is less than 43.

c.

To determine

Check whether there is evidence to conclude that the mean concentration differs from 44.

Expert Solution & Answer

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Check out a sample textbook solution

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Answer 3

Question

Definition Definition Middle value of a data set. The median divides a data set into two halves, and it also called the 50th percentile. The median is much less affected by outliers and skewed data than the mean. If the number of elements in a dataset is odd, then the middlemost element of the data arranged in ascending or descending order is the median. If the number of elements in the dataset is even, the average of the two central elements of the arranged data is the median of the set. For example, if a dataset has five items—12, 13, 21, 27, 31—the median is the third item in ascending order, or 21. If a dataset has six items—12, 13, 21, 27, 31, 33—the median is the average of the third (21) and fourth (27) items. It is calculated as follows: (21 + 27) / 2 = 24.

Chapter 6.9, Problem 4E

a.

To determine

Check whether there is evidence to conclude that the mean concentration is greater than 41.

b.

To determine

Check whether there is evidence to conclude that the mean concentration is less than 43.

c.

To determine

Check whether there is evidence to conclude that the mean concentration differs from 44.

Expert Solution & Answer

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Answer 4

Question

Definition Definition Middle value of a data set. The median divides a data set into two halves, and it also called the 50th percentile. The median is much less affected by outliers and skewed data than the mean. If the number of elements in a dataset is odd, then the middlemost element of the data arranged in ascending or descending order is the median. If the number of elements in the dataset is even, the average of the two central elements of the arranged data is the median of the set. For example, if a dataset has five items—12, 13, 21, 27, 31—the median is the third item in ascending order, or 21. If a dataset has six items—12, 13, 21, 27, 31, 33—the median is the average of the third (21) and fourth (27) items. It is calculated as follows: (21 + 27) / 2 = 24.

Chapter 6.9, Problem 4E

a.

To determine

Check whether there is evidence to conclude that the mean concentration is greater than 41.

b.

To determine

Check whether there is evidence to conclude that the mean concentration is less than 43.

c.

To determine

Check whether there is evidence to conclude that the mean concentration differs from 44.

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Answer 5

Chapter 6.9, Problem 4E

a.

To determine

Check whether there is evidence to conclude that the mean concentration is greater than 41.

b.

To determine

Check whether there is evidence to conclude that the mean concentration is less than 43.

c.

To determine

Check whether there is evidence to conclude that the mean concentration differs from 44.

Answer 6

Chapter 6.9, Problem 4E

a.

To determine

Check whether there is evidence to conclude that the mean concentration is greater than 41.

Answer 7

Chapter 6.9, Problem 4E

a.

To determine

Check whether there is evidence to conclude that the mean concentration is greater than 41.

Answer 8

b.

To determine

Check whether there is evidence to conclude that the mean concentration is less than 43.

Answer 9

b.

To determine

Check whether there is evidence to conclude that the mean concentration is less than 43.

Answer 10

c.

To determine

Check whether there is evidence to conclude that the mean concentration differs from 44.

Answer 11

c.

To determine

Check whether there is evidence to conclude that the mean concentration differs from 44.

Answer 12

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Answer 13

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Answer 14

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Answer 15

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Check whether there is evidence to conclude that the mean concentration is greater than 41.

Solution Summary: The author concludes that the null hypothesis is rejected if the P -value is less than the level of significance.

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Check whether there is evidence to conclude that the mean concentration is greater than 41.

Check whether there is evidence to conclude that the mean concentration is less than 43.

Check whether there is evidence to conclude that the mean concentration differs from 44.

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