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Week 9: Chapter 7 Test Score: 6/30 5/8 answered Question 6 The lengths of adult males' hands are normally distributed with mean 188 mm and standard deviation is 7. mm. Suppose that 8 individuals are randomly chosen. Round all answers to 4 where possible. a. What is the distribution of ? a - N( 188 2.6163 b. For the group of 8, find the probability that the average hand length is less than 186. c. Find the first quartile for the average adult male-hand length for this sample size. d. For part b), is the assumption that the distribution is normal necessary? O NoO Yes