Stat 1400 - Statistical Concepts for BusinessUnit 6 Normal Distributions

Lab 6b

Professors!Professors!Professors!

1.Suppose that you are deciding whether to take Professor Fisher's class or Professor Savage's class next semester.You happen to know that each professor gives A's to those scoring above 90 on the final exam and F's to those scoring below 60.You also happen to know that the distribution of scores on Professor Fisher's final is approximately normal with mean 74 and standard deviation 7 and that the distribution of scores on Professor Savage's final is approximately normal with mean 78 and standard deviation 18.

(a)Identify which distribution is Professor Fishers's grades and which distribution is Professor Savage's grades.Justify your choice.

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