Use the given degree of confidence and sample data to find a confidence interval for the population standard
deviation o. Assume that the population has a normal distribution. Round the confidence interval limits to one
more decimal place than is used for the original set of data.
The football coach randomly selected ten players and timed how long each player took to perform a certain drill. The
times (in minutes) were:
9,7,15,6, 15
12,8,6,14,5
Find a 95% confidence interval for the population standard deviation o.
(A) 2.6 min (B) 0.8 min (C) 2.7 min (D) 2.7 min Additional content