all Verizon 1:44 PM 62%-, 6. -2 points Mintro Stats t0.E 061. My Notes O Ask You

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all Verizon 1:44 PM 62%-, 6. -2 points Mintro Stats t0.E 061. My Notes O Ask Your The SAT and the ACT are the two major standardized tests that colleges use to evaluate candidates. Most students take just one of these tests. However, some students take both. The data data300.dat gives the scores of 60 students who did this. How can we relate the two tests? (a) Plot the data with SAT on the x axis and ACT on the y axis. Describe the overall pattern and any unusual observations (b) Find the least-squares regression line and draw it on your plot. Give the results of the significance test for the slope (Round your regression slope and intercept to three decimal places, your test statistic to two decimal places, and your P value to four decimal places) (SAT) (c) What is the correlation between the two tests? (Round your answer to three decimal places.) 7. -12 points MintroStat9 to E.042 My Notes Ask Your Returns on common stocks in the United States and overseas appear to be growing more closely correlated as economies become more interdependent. Suppose that the following population regression line connects the total annual returns (in percent) on two indexes of stock prices: MEAN OVERSEAS RETURN -0.09 + 0.30 × US. RETURN (a) what in this line? 0 . is the population slope,-0.09. O is the population slope, 0.30. 0 is the population intercept, 0.30. O 0 is the population intercept,-0.09. What does this number say about overseas returns when the U.S. market is flat (0% return)? This says that the mean overseas return is%when the us, return is 0%. (b) What is in this line? A, is the population slope, 0.30. 1 is the population intercept,-0.09. 1 is the population intercept, 0.30. 1 is the population slope,-0.09.

Explanation / Answer

7) a) beta 0 = - 0.09 is the population intercept

When the us return is 0% then the mean overseas return decreases 9%

b) beta1 = 0.30 is the population slope

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