SOLUTION: 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 f

Algebra ->  Probability-and-statistics -> SOLUTION: 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 f      Log On


   

Question 869533: 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:
7.2 10.5 9.9 8.2 11.0
7.3 6.7 11.0 10.8 12.4
Determine a 95% confidence interval for the mean time for all players.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi

7.2 10.5 9.9 8.2 11.0 7.3 6.7 11.0 10.8 12.4 

Using: numberempire.com

Mean = 9.5, s = 1.98

ME = 1.96(1.98)/sqrt(10) = 1.23

CI: 9.5-1.23 < u <  9.5 + 1.23