Question 2 The average cost of second grade classroom school supplies in four randomly selected stores in 2021 was $44.5 with a standard deviation of $4.73. Test that the average cost was less than $40. Use 0.05 level of signicance. 1. State the null and the alternative hypotheses. 2. Select the appropriate inference procedure and state or verify conditions for using it. Specify the rejection region. 3. Calculate the value of the test statistic. 4. State the test decision and conclusion