Medical researches claim that the mean body temperature is not equal 98.6 degrees F for healthy adults. Temperatures were recorded for a random sample of 20 adults. The mean was 97.6 degrees F with a sample standard deviation of 1.5 degrees F. Does this data support their claim? Test at the .05 level of significance.
a) State the null and alternate hypothesis.
b) State the formula used and show your work!
c) Do you reject or fail to reject the null hypothesis? Why?
d) Was the researcher's claim accurate?