a data set includes 106 body temperatures of healthy Questi

a data set includes 106 body temperatures of healthy ... Question A data set includes 106 body temperatures of healthy adult humans for which x = 98.9 grade F and s= 0.62 grade F. A) what is the bet point estimate of the mean body temerature of all healthy humans? the best point estimate is __ grade F.(type an interger or a decimal) B)using the sample statistics construct a 90% confidence interval estimate of the mean body temperature of all healthy humans. do the confidence interval limits contain 98.6 grade F? what does the sample suggest about the use 98.6 grade F as the mean body temerature? __ gradeF < u <__ grade F (round to one decimal place as needed) Do the confidence interval limits contain 98.6 F __ No __ Yes What does this suggest about the use 98.6F as the mean body temperature? __A)this suggests tha the mean body temperature could be higher than 98.6 F. __B)this suggests tha the mean body temperature could be lower than 98.6 F. __C)this suggests tha the mean body temperature could ver possibly be 98.6 F.

Solution

Assuming body temperatures are normally distributed and your data set is a good random sample: (A) 98.3 (B) t-score for 90% confidence with 100 degrees of freedom = 1.660 (98.3 - 1.660*0.65) < mu < (98.3 + 1.660*0.65) 91.9 < mu < 99.4 Yes, the confidence interval contains 98.6 (C) C)This suggests that the mean body temperature COULD BE 98.6 F.