SCENARIO 8-16
A random sample of 100 stores from a large chain of 500 garden supply stores was selected to determine the mean number of lawnmowers sold at an end-of-season clearance sale.The sample results indicated a mean of 6 and a standard deviation of 2 lawnmowers sold.A 95% confidence interval (5.623 to 6.377)was established based on these results.
-Referring to Scenario 8-16,95% of the stores have sold between 5.623 and 6.377 lawnmowers.

Question

Quizplus · Accepted Answer

The confidence interval (5.623 to 6.377) estimates the range in which the true mean number of lawnmowers sold by all stores is likely to fall, not the number of lawnmowers sold by 95% of the stores.

SCENARIO 8-16 A Random Sample of 100 Stores from a Large Chain