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The average age of an adult's first vacation without a parent or guardian was reported to be 23 years old. A travel agent believes that the average age is different from reported. They sample 28 adults and they asked their age in years when they first vacationed as an adult without a parent or guardian, data shown below.
See Excel for Data.
adult vacation data.xlsx
Test the claim using a 10% level of significance. The hypotheses for this problem are:
H0: = 23
H1: 23
Find the test statistic. Round answer to 4 decimal places. test statistic t =
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