Back at the sports store from question 1, the owner decides to use significance tests to better understand the behaviour of his customers. Starting with a new sample of 60 customers, he finds:
Average amount spent: X ̅= 42.8
Standard deviation: S = 11.7
14 customers purchased an item of supporter’s apparel.
At the 5% significance level, is there evidence that the mean spend is different from $40.00? State the null and alternative hypothesis.
Find the p-value in a).
At the 5% level, is there evidence that fewer than 10% of customers purchase at least one item of supporter’s apparel.