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In the past, a business noted its mean sales order size was $100. This business is...

In the past, a business noted its mean sales order size was $100. This business is interested in testing whether a recent advertising campaign has changed its mean sales order size. A random sample of 50 orders produced a sample mean of $105 and a sample standard deviation of $15. Assume sales order size is normally distributed.  What is the p-value?

0.0091

0.02 < p-value < 0.05

0.0182

0.01 < p-value < 0.025

0.05 < p-value < 0.10
Math   Statistics-And-Probability   
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