Hypothesis testing of mean with two populations: Although they share the same island, Dominican Republic and Haiti have quite different lifestyles. A survey of 100 people of similar backgrounds from each country was observed for a large number of years. The average lifespan in D.R was 71.5 s=10 years. In Haiti the average lifespan was 67.5 years, s=12years. Does D.R. have a longer lifespan than Haiti, using a significance level of =.01 H0: __________ Ha:__________ Tail (left, right, or two tails) _______ Calculate the Z test value= __________ From the Z table, find the p-value= _________ State your conclusion (a or b)_____ a) There is sufficient data to reject the null hypothesis that the lifespan in DR is longer than in Haiti. b) There is not sufficient data to reject the null hypothesis that the lifespans are the same in the two countries