3. [l7 Points] DETAILS 0/2 Submissions Used A researcher interested in personal health habits asked a random sample of 3262 people how many times they usually worked out per week, and their level of educational attainment. Weekly workouts o 1-2 | 3-5 5+ High school 135 268 I 350 105 Undergraduate degree 245 458 I 596 241 Graduate degree 197 181 I 379 107 O Ho: Number of weekly workouts is not related to educational attainment vs. Ha: Number of weekly workouts is related to educational attainment O Ho: Number of weekly workouts is related to educational attainment vs. Ha: Number of weekly workouts is not related to educational attainment O Ho: p1 = p2 = p3 = p4 = 1/4 vs. Ha: at least one of the p's is different from 1/4 (b) The test statistic is 11.542. What is the P-value? (Use 3 decimals.) I: (c) What is the appropriate conclusion for a = 0.05? O Reject H0. There is sufficient evidence to claim the number of weekly workouts is related to educational attainment. 0 Don't reject H0. There is sufficient evidence to claim the number of weekly workouts is related to educational attainment. O Reject Ho. There is insufficient evidence to claim the number of weekly workouts is related to educational attainment. O Don't reject Ho. There is insufcient evidence to claim the number of weekly workouts is related to educational attainment. a) Which hypotheses should they test? 0 Ho: p1 = p2 = p3 = 1/3 vs. Ha: at least one of the p's is different from 1/3 MYNOTES l PRACTl 4. [-17 Points] DETAILS 0/2 Submissions Used For several countries, the correlation with Internet use is 0.760 for GDP, 0.670 for cellular-phone use, 0.680 for literacy, -0.780 for fertility, and -0.690 for C02 emissions. (a) Which variable has the strongest linear association with Internet use? O GDP O cellular-phone use 0 literacy O fertility O co2 (b) Which variable has the weakest linear association with Internet use? O GDP O cellular-phone use 0 literacy O fertility 0 CO2 (c) Interpret the correlation between Internet use and fertility (the mean number of children per adult woman). O Positive correlation, so countries with higher fertility rates tend to have lower Internet use and vice versa. O Positive correlation, so countries with higher fertility rates tend to have higher Internet use and vice versa. O Negative correlation, so countries with higher fertility rates tend to have higher Internet use and vice versa. 0 Negative correlation, so countries with higher fertility rates tend to have lower Internet use and vice versa