Question

Use the given degree of confidence and sample data to construct a confidence interval for the population mean μ. Assume that the population has a normal distribution.

The football coach randomly selected ten players and timed how long each player took to perform a certain drill. The times (in minutes) were:
7.1 10.5 9.0 8.9 11.2
7.0 6.3 11.1 10.8 12.3
Determine a 95% confidence interval for the mean time for all players.

Select one:

a. 10.93 min < μ < 7.91 min

b. 7.91 min < μ < 10.93 min

c. 10.83 min < μ < 8.01 min

d. 8.01 min < μ < 10.83 min

Answer 1

option B is correct

7.91 min < μ < 10.93 min