a.) The distribution of students' grades is _____ (select of one the following): (approximately normal, is exactly normal, may or may not be normal, is left skewed, is right skewed)  b.)  If n = 32 students are selected at random, the distribution of the sample mean grade is ______  (select of one the following): (approximately normal, not normal, left-skewed, right-skewed) with a mean of ____ and a standard deviation of ______ c.) The probability that the sample mean grade for these 32 students is less than 64.0 is _______?

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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a.) The distribution of students' grades is _____ (select of one the following): (approximately normal, is exactly normal, may or may not be normal, is left skewed, is right skewed) 

b.)  If n = 32 students are selected at random, the distribution of the sample mean grade is ______  (select of one the following): (approximately normal, not normal, left-skewed, right-skewed) with a mean of ____ and a standard deviation of ______

c.) The probability that the sample mean grade for these 32 students is less than 64.0 is _______?

At a particular university, students' grades in introductory statistic classes are generally unimodal and skewed to the left with a mean of μ = 62 and a standard deviation of a =
20.0. (Round to 2 decimal places for all z-values and round all other answers to 4 decimal places, if needed.)
Transcribed Image Text:At a particular university, students' grades in introductory statistic classes are generally unimodal and skewed to the left with a mean of μ = 62 and a standard deviation of a = 20.0. (Round to 2 decimal places for all z-values and round all other answers to 4 decimal places, if needed.)
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