Changing normal ~ During the mid-nineteenth century, a German physician named Carl Wunderlich used over a million human body temperature readings to establish a standard \"normal\" body temperature of 37 degrees Celsius (98.6 degrees Farhenheit). Over time, however, and especially more recently, lower body temperatures have been reported in healthy adults. In a time of pandemic illness where fever is a widely reported symptom, experts are advising changes to how we understand \"normal\" body temperature and what measurements should be considered signs of illness. To add to the ongoing research, Dr. Black and their associates have decided to gather some data for analysis. The group recruits a random sample of 11 healthy adults in a nearby urban area and obtains a mean body temperature reading of 36.66 degrees Celsius with a standard deviation of 0.46. Dr. Black wants to conduct a hypothesis test to determine if the mean body temperature reading for the population of healthy adults in their area is less than 37 degrees Celsius. Round all calculated values to 4 decimal places as appropriate. 1. Which hypothesis test should Dr. Black use? QA. t test for a population mean Q B. Randomization test for the difference of two population proportions Q C. Z test for one population proportion O D. X2 goodness of fit test OE. X2 test of independence 2. Which set of hypotheses should Dr. Black use to answer the research question? QA.H0:,u=37vs.Ha:/i>37 QB.H0:M=37vs.Ha:u 36.66 3. What conditions must be met for the hypothesis test to be valid? Select all that apply: [3A. There must be an expected variation in the body temperature readings of at least 5 degrees Celsius. C] B. There must be at least 3 levels of body temperature readings. C] C. Dr. Black must be able to assume that the distribution of body temperature readings in healthy adults is normally distributed. C] D. The sample observations must be independent. C] E. The sample body temperature readings must be normally distributed. 4. What is the test statistic? ?