Question

In a study of physical fitness, a random sample college students volunteered to exercise. Their exercise capacity times (in minutes) are given below. Answer the following questions.

13.0 21.0 13.5 35.0 20.5 27.0 28.0 28.0 23.0 13.0 53.0 51.0

Calculate a 99% CI for the population mean capacity time.

Answer 1

	Values ( X )
	13	200.6954
	21	38.0282
	13.5	186.7787
	35	61.3606
	20.5	44.4449
	27	0.0278
	28	0.6944
	28	0.6944
	23	17.3614
	13	200.6954
	53	667.3594
	51	568.0262
Total	326.0	1986.1668

Mean   

Standard deviation    

Confidence Interval



Lower Limit =
Lower Limit = 15.1192
Upper Limit =
Upper Limit = 39.2142
99% Confidence interval is ( 15.1192 , 39.2142 )