Question 3 The cost of second grade classroom school supplies in four randomly selected stores in 2020 and 2021 is reported in the table below. Test that on average stores charged more for the second grade classroom school supplies in 2021 compared to 2020. Use 0.1 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