(a)
To explain how can you tell the summary statistics that the distribution of earnings in each group is strongly skewed to the right and why.
(a)
Explanation of Solution
The summary statistics that the distribution of earnings in each group is strongly skewed to the right because earnings cannot take on negative values and the standard deviation is almost the same as the mean, thus distribution needs to be strongly skewed, because negative values are within two standard deviations of the mean and these values fall in the
The sample sizes
(b)
To construct and interpret
(b)
Answer to Problem 47E
There is
Explanation of Solution
Given:
Calculating confidence interval:
Now we will be calculating the t -value for this we need to find out the degree of freedom. Thus, the degree of freedom will be:
Then the t -value will be as:
Thus the confidence interval be:
Thus, we conclude that there is
(c)
To interpret the
(c)
Explanation of Solution
The
Chapter 10 Solutions
PRACTICE OF STATISTICS F/AP EXAM
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