The average retirement age in America is 64 years old. Do small business owners retire at an older average age? The data below shows the results of a survey of small business owners who have recently retired. Assume that the distribution of the population is normal. 72, 65, 68, 64, 59, 65, 74, 59, 63, 65, 65, 61, 62, 68, 71 What can be concluded at the 0.05 level of significance? a. Given a null hypothesis for this case HO: u64, the alternative hypothesis, Ha: [Select] b. Test statistic, t = [Select] c. p-Value=[Select] d. Given a = 0.05, the null hypothesis [Select]