Scalar and Matrix Multiplication — Unit test Answers
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The set of life spans of an appliance is normally distributed with a mean = 48 months and a standard deviation = 8 months. What is the life span of an appliance that has a z-score of –3?
A
3 monthsB
24 monthsC
45 monthsD
72 months31
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A supervisor finds the mean number of miles that the employees in a department live from work. He finds and . Which statement must be true?
A
z37 is within 1 standard deviation of the mean.B
z37 is between 1 and 2 standard deviations of the mean.C
z37 is between 2 and 3 standard deviations of the mean.D
z37 is more than 3 standard deviations of the mean.Did you find these answers helpful?
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