What are the null and alternate hypotheses

    USA Today reported that the state with the longest mean life span is Hawaii, where the population mean life span is 77 years.A random sample of 20 obituary notices in the Honolulu Advertiser gave the following information about life span (in years) of Honolulu residents:72 68 81 93 56 19 78 94 83 8477 69 85 97 75 71 86 47 66 27 years and s < 20.65 years.Assuming that life span in Honolulu is approximately normally distributed, does this information indicate that the population mean life span for Honolulu residents is less than 77 years by answering the following:a) What are the null and alternate hypotheses, H0 and H1?b) What sampling distribution should be used (z or t)? Why? Calculate the statistic for this data sample.c) Use a 5% level of significance - to determine the critical value.d) Is the alternate hypothesis valid at this significance level.For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac).

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