I need the answer to this question with an explanation

Problem 4 Problem 4a At a 1% level of significance, conduct a two-tailed test of hypothesis involving the population mean for Variable 4, for just those customers who responded "1' for Variable 1 in your survey (feel free to specify any value for the population claim that makes sense given your data). In your answer make sure that you show HO and Ha, sketch the sampling distribution showing the critical value(s) and the rejection region. Use your calculator for all the computations required to determine your test statistic, show all formulae with the correct numbers substituted in the formulae and also state the decision and conclusion in the context of the survey. Show all your work . [8 marks]. Nar 4 - Age Var I - Menu 38 31 20 42 2 5 5 2 44 2 45 35 26 76 65 2 4 1 2 47 2 3.0 33 2.9 2 84 35 2 2.78 37 2.72 2.67 30 2.62 258 43 2 2.54 20 57