Question 9: According to one economist, 30% of adults aged 18 and over living in Quebec are likely to purchase a new vehicle in the next year. However, a recent survey of 262 Quebec residents indicates that only 66 respondents are likely to do so.

Is the economist's claim exaggerated? Use a one-tailed left-handed test with a significance level of 2.5%.

a) Since the calculated Z-value = -1.696 < the critical Z-value = -1.645, the results contradict the economist's statement. The proportion is rather less than 30%. b) Since the calculated value of Z = -1.696 > the critical value of Z = -1.96, the results do not contradict the economist's statement. The proportion appears to be equal to 30%. c) Since the calculated value of Z = -1.696 < the critical value of Z = -1.28, the results contradict the economist's statement. Rather, the proportion is less than 30%. d) Since the calculated value of Z = -1.696 > the critical value of Z = -2.58, the results do not contradict the economist's statement. The proportion appears to be equal to 30%. e) Since the calculated value of Z = -1.696 < the critical value of Z = -1.04, the results contradict the economist's statement. Rather, the proportion is less than 30%.