The manufacturers of Ben & Jerry's Ice Cream would like to check the quality of their batches of Cherry Garcia, their most popular ice cream flavor. Since they have recently been receiving complaints from customers claiming that there aren't enough cherries in their pints of Cherry Garcia, the company would like to evaluate whether their recent batches contain fewer cherries than their known average 27 cherries. Below are the numbers of cherries the company has counted in 9 pints they have manufactured from their most recent batch. Test this hypothesis using an alpha level of .01.

x: {19, 21, 22, 20, 21, 26, 21, 28, 19}

• What is the appropriate test?
• What is the null hypothesis?
• What is the alternative hypothesis?
• What is (are) the critical values?
• What is the obtained statistic?
• Make a decision:

Reject Null

Reject Alternative

Retain Null

Retain Alternative

• What does your decision mean?