It has long been stated that the mean temperature of humans is 98.6F. However, t

Question

It has long been stated that the mean temperature of humans is 98.6F. However, two researchers currently involved in the subject thought that the mean temperature of humans is less than 98.6 F. They measured the temperatures of 50 healthy adults 1 to 4 times daily for 3 days, obtaining 225 measurements. The sample data resulted in a sample mean of 98.4 F and a sample standard deviation of 1.1 F. Use the P-value approach to conduct a hypothesis test to judge whether the mean temperature of humans is less than 98.6 F at the 0.01 level of significance.

Find the test statistic.

Explanation / Answer

t = ( 98.4 - 98.6 ) / ( 1.1 / srqt 50 )

t = -1.286

p value : 0.0985

since p value is greater than 0.01 we fail to reject Ho

conclusion

the mean temperature of humans is not less than 98.6 F

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