We wish to check that normal body temperature may be more than 98.6 degrees for a certain population. In a random sample of 18 individuals from this population, the sample mean was found to be 98.87 and the sample standard deviation was 0.482. Assume the population is normally distributed. Use a = 0.05.
What is the distribution of the statistic, which should be to test the hypotheses in a previous question (#8) ?
t-distribution with 18 degrees of freedom
standard normal distritbution with 17 degrees of freedom
t-distribution with 17 degrees of freedom
standard normal distritbution
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