Erin O.

asked • 15d


According to a study done by UCB students, the height for Martian adult males is normally distributed with an average of 65 inches and a standard deviation of 2.5 inches. Suppose one Martian adult male is randomly chosen. Let X = height of the individual. Round all answers to 4 decimal places where possible. 

a. What is the distribution of X? X ~ N(,) 

b. Find the probability that the person is between 65.5 and 66.8 inches.  

c. The middle 20% of Martian heights lie between what two numbers?



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