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HOOPS: Statistically analyze the change in monthly sales

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Hi, I need some guidance with this question:

In the past, monthly sales for HOOPS, a small software firm, have averaged \$20,000 with standard deviation
\$4000. During the last year sales averaged \$22,000 per month. Does this indicate that monthly
sales have changed (in a statistically significant sense)? Use  0.05.

Assume monthly sales are normally distributed.

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This solution is comprised of a neat, step-by-step solution of how to statistically analyze change in monthly sales.

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Ho: There is no change in the monthly sales, that is mu = 20000

Ha: There is a significant change in the monthly ...

Measures of Central Tendency

This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.