A physician wants to develop criteria for determining whethe

A physician wants to develop criteria for determining whether a patient\'s pulse rate is atypical, and she wants to determine whether there are significant differences between males and females. Use the sample pulse rates below. Construct a 95% confidence interval estimate of the mean pulse rate for males.

Solution

Confidence Interval
CI = x ± t a/2 * (sd/ Sqrt(n))
Where,
x = Mean
sd = Standard Deviation
a = 1 - (Confidence Level/100)
ta/2 = t-table value
CI = Confidence Interval
Mean(x)=72.4
Standard deviation( sd )=11.067
Sample Size(n)=10
Confidence Interval = [ 72.4 ± t a/2 ( 11.067/ Sqrt ( 10) ) ]
= [ 72.4 - 2.26 * (3.5) , 72.4 + 2.26 * (3.5) ]
= [ 64.5,80.3 ]