Question 20 options:

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

29,23,22,24,25,23,24,28,27,20,24,27,28,25,21,25,20,25,22,25,24,19,27,21,21,28,24,22

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 =