CH7 Norm 2: Healthy human body temperatures are normally distributed with a mean of 98.6 degrees f and a standard deviation of 0.2 degrees F. What percent of samples of size 49 would have an average temperature above 98.7 degrees F? O a. 0.62% O b. 2.5% O c. 25% O d. 99.38% QUESTION 3 CH7 Norm 1c: If a normal distribution has a mean of 75 and a standard deviation of 14, then what would be the probability of finding, from sample of size 50, a sample average with a value of 74 or less? O a. 0.5051 O b. 0.5000 O c. 0.3050 O d.-0.5051