Question

•Normal human body temperature is often referred to as 98.6°, but is that value accurate? Body temperature was measured in 25 individuals and was found to have a mean of 98.524 and a standard deviation of 0.678. do the t test and tell the conclusion

Answer 1

Sample mean (x) = 98.524

Population mean (u) = 98.6

Number of individual s (n) = 25

Standard deviation (S) = 0.678

t = x - u

-----------------

s /

= 98.524 - 98.6 / 0.13

= - 0.58

Null hypothesis - Normal human body temperature is 98.6

Alternative hypothesis - Normal human body temperature is not 98.6

From the t test table, the critical value of t is 2.0629 at 0.05 and degree of freedom 24.

- 0.58 is greater than - 2.0629 and smaller than 2.0629, therefore null hypothesis is accepted.

Normal human body temperature is equal to 98.6