Question
A random sample of 100 stores from a large chain of 1,000 garden supply stores wasselected to determine the average number of lawnmowers sold at
A random sample of 100 stores from a large chain of 1,000 garden supply stores wasselected to determine the average number of lawnmowers sold at an end-of-seasonclearance sale. The sample results indicated an average of 6 and a standard deviation of 2 lawnmowers sold. A 95% confidence interval [5.623 to 6.377] was established based onthese results. Which of the following is true?
A. f the population had consisted of 10,000 stores, the confidence interval estimate of the mean would have been wider in range.
B. All possible samples of 100 stores taken from the population of 1,000 stores, 95% of the confidence intervals developed will contain the true population mean within the interval.
C. All possible samples of 100 stores drawn from the population of 1,000 stores, 95% of the sample means will fall between 5.623 and 6.377 lawnmowers
D. 95% of the stores have sold between 5.623 and 6.377 lawnmowers
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