(a)
Section 1:
To find: The
(a)
Section 1:
Answer to Problem 58E
Solution: The
Explanation of Solution
Calculation: In order to test the difference in proportions for
Also, out of 349 customers (represented as
The difference between the two sample proportions
The Standard Error of
For
Hence, the margin of error is about
The
Hence, it can be said that with
Section 2:
To find: The
Section 2:
Answer to Problem 58E
Solution: The
Explanation of Solution
It is provided that out of 40 runners (represented as
Also, it is provided that out of 40 runners (represented as
The difference between the two sample proportions
The Standard Error of
For
Hence, the margin of error is about
The
Hence, it can be said that with
Section 3:
To explain: The concept of confidence interval based on above Sections 1 and 2.
Section 3:
Answer to Problem 58E
Solution: The difference in the proportion of male customers who tip a server wearing red colored shirt and the proportion of male customers who tip a server wearing a different colored shirt than red, with
Explanation of Solution
Given: In sections 1 and 2 above, the
Explanation: The confidence interval shows the bracket of values which are an estimate that the value of the parameter will lie between these values. The confidence interval obtained for part (a) is
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Chapter 8 Solutions
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