Over 100 years ago, Carl Wunderlich claimed that the mean body temperature of an adult is 98.5°. A sample of 130 adults was taken, and it was found that their mean temperature was 98.25" with a standard deviation of 0.72.
A. Write the hypothesis for this claim
B. Sketch the sampling distribution, including the rejection regions at a level of significance of alpha = 0.05 . Find the standardized test statistic, and add it to your diagram.
C. What decision should be made in regards to this claim?
D. If the level of significance is lowered to a = 0.01, does the decision change?