question 1

Using the mariokart data, test whether the number of included wheel controllers is correlated with the shipping cost in the population of all eBay Mario Kart auctions. Use a significance level of .05. Let " be the sample correlation, and let p be the population correlation. Check all of the following statements that are correct (more than one alternative can be correct). O a. The null hypothesis is Ho : p = 0 O b. The p-value for this hypothesis test is 0.052 O c. For this hypothesis test, we reject the null hypothesis O d. Based on the hypothesis test, we conclude there is no evidence that number of included wheel controllers and shipping cost are correlated in the population.Using the mariokart data, test whether the seller rating is correlated with the number of bids in the population of all eBay Mario Kart auctions. Use a significance level of .05. Let r be the sample correlation, and let p be the population correlation. Check all of the following statements that are correct (more than one alternative can be correct). O a. The null hypothesis is Ho : r * 0 O b. The p-value for this hypothesis test is -0.106 O c. For this hypothesis test, we fail to reject the null hypothesis O d. Based on the hypothesis test, we conclude there is no evidence that seller rating and number of bids are correlated in the population.Using the mariokart data, test whether the starting price is correlated with the number of bids in the population of all eBay Mario Kart auctions. Use a significance level of .05. Let " be the sample correlation, and let p be the population correlation. Check all of the following statements that are correct (more than one alternative can be correct). O a. The null hypothesis is Ho : r # 0 O b. The p-value for this hypothesis test is 0.000 O c. For this hypothesis test, we fail to reject the null hypothesis O d. Based on the hypothesis test, we conclude there is evidence that starting price and number of bids are correlated in the population