In a 1868 paper German physician Carl Wunderlich reported ba

In a 1868 paper, German physician Carl Wunderlich reported based on over a million body temperature readings that the mean body temperature for healthy adults is 98.6° F. However, it is now commonly believed that the mean body temperature of a healthy adult is less than what was reported in that paper. To test this hypothesis a researcher measures the following body temperatures from a random sample of healthy adults. 98.2, 98.6, 98.7, 98.7, 97.5, 98.2, 98.5, 97.7

Solution

Test of mu = 98.6 vs not = 98.6

Variable N Mean StDev SE Mean 95% CI T P
C1 8 98.263 0.457 0.161 (97.881, 98.644) -2.09 0.075

as P-value is 0.075 > 0.05 so we can accept H0. with the confidence level 95%