Q1.The Pew Research Center claims that 55% of U.S. adults regularly watch their local television news. You decide to test this claim and ask a random sample of 425 adults in the United States whether they regularly watch their local television news. Of the 425 adults, 255 respond yes. At= 0.05 is there enough evidence to support the claim? (Critical Z = 1.645).

Q2:The average yield of coffee tree at kona is 179 lb. A random sample of 5 trees were selected and their yields were estimated as: 155 179 175 175 161. Assuming that the yield of coffee trees is normally distributed. Determine whether there is sufficient evidence in the sample trees at the 0.05 level of significance to conclude that the average yield is less than 179. (Critical t = -2.152)