please help! DS101

The recommendations of respected wine critics have a substantial effect on the price of wine. Vintages that eam higher ratings command higher prices and spark surges in demand. These data are a random sample of ratings of wines selected from an online Wob sito from the 2000 and 2001 vintages. Complefe parts (a) through (d). Click the icon to view the table of wine rating, price, and vintage. (a) Do the ratings meet the conditions needed for a two-sample confidence interval? A. Yes, all the conditions are satisfied. B. No, the sampling procedure was not identified and it cannot be concluded that this is a simple random survey. C. No, the variances are drastically different. D. No, the 2000 data contains outiers. E. No, the 2001 data is too skewod. (b) Find the 95% confidence interval for the difference in average ratings in these two vintages. Does one of the years look better than the other? The 95% confidence interval for 20002001 is (Round to one decimal place as needed.) Does one of the years look better than the othen A. No, because the confidence interval contains 0 . B. Yes, 2001 looks better because the confidence interval is less than 0 . C. Yes, 2000 looks better because the confidence interval contains 0 . D. Yes, 2000 looks better because the confidence interval is greater than 0 . (c) Suggest one or two possible sources of confounding that might distort the confidence interval reported in part b. Select all that apply. A. The numerical scale used to rate the wine. B. The type of grape used. C. The number of bottles of the vintage produced. D. The region where the wine comes from. (d) Given a choice between a 2000 and 2001 vintage at the same price, which would you choose? Does it matter? A. It is not statistically significant but on average the 2001 vintage scores slightly higher than the 2000 vintage. B. There is a statistically significant difference between the two. Always choose the 2001 vintage. C. It is not statistically significant but on average the 2000 vintage scores slightly higher than the 2001 vintage. D. There is a statistically significant between the two. Always choose the 2000 vintage. Wine rating, price and vintage table. The recommendations of respected wine critics have a substantial effect on the price of wine. Vintages that eam higher ratings command higher prices and spark surges in demand. These data are a random sample of ratings of wines selected from an online Wob sito from the 2000 and 2001 vintages. Complefe parts (a) through (d). Click the icon to view the table of wine rating, price, and vintage. (a) Do the ratings meet the conditions needed for a two-sample confidence interval? A. Yes, all the conditions are satisfied. B. No, the sampling procedure was not identified and it cannot be concluded that this is a simple random survey. C. No, the variances are drastically different. D. No, the 2000 data contains outiers. E. No, the 2001 data is too skewod. (b) Find the 95% confidence interval for the difference in average ratings in these two vintages. Does one of the years look better than the other? The 95% confidence interval for 20002001 is (Round to one decimal place as needed.) Does one of the years look better than the othen A. No, because the confidence interval contains 0 . B. Yes, 2001 looks better because the confidence interval is less than 0 . C. Yes, 2000 looks better because the confidence interval contains 0 . D. Yes, 2000 looks better because the confidence interval is greater than 0 . (c) Suggest one or two possible sources of confounding that might distort the confidence interval reported in part b. Select all that apply. A. The numerical scale used to rate the wine. B. The type of grape used. C. The number of bottles of the vintage produced. D. The region where the wine comes from. (d) Given a choice between a 2000 and 2001 vintage at the same price, which would you choose? Does it matter? A. It is not statistically significant but on average the 2001 vintage scores slightly higher than the 2000 vintage. B. There is a statistically significant difference between the two. Always choose the 2001 vintage. C. It is not statistically significant but on average the 2000 vintage scores slightly higher than the 2001 vintage. D. There is a statistically significant between the two. Always choose the 2000 vintage. Wine rating, price and vintage table