Question

It is commonly believed that the mean body temperature of a healthy adult is F.  

          You are not entirely convinced; you believe that it is not F

          a) If you going to test this claim at the 0.01 significance level, what would be your null and

             alternative hypotheses?

           b) What type of hypothesis test should you conduct (left-, right-, or two-tailed)?

Answer 1

(a)

The person is not convinced that the mean body temperature of a healthy adult is F. That means the person thinks it is more than or less than F.

So the null and alternate hypothesis will be

null :

alternate

(b) Two tailed test

Since the alternate hypothesis is , we reject the null hypothesis if calculated test statistic value is small or large enough.

So one should conduct two-tailed test here