A Sales Manager Was Interested in Determining If There Is

question 34

Multiple Choice

A sales manager was interested in determining if there is a relationship between college GPA and sales performance (number of units sold) among salespeople hired
Within the last year. The correct null hypothesis is

• A) There is no relationship between GPA and sales performance.
• B) There is a relationship between GPA and sales performance.
• C) β1 = 0
• D) Both A and C.
• E) None of these

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Definitions:

Standard Deviation

An indicator of the diversity or variability within a data set, reflecting how much individual data points differ from the mean.

Normally Distributed

Refers to a probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean.

Mean

The average of a set of values, calculated by dividing the sum of all values by the number of values.

Standard Deviation

An indicator used to determine the degree of scatter or deviation present in a group of data points.