B and C please \"A HW9 STAT201. Correlatic C www.webassign.net/web/Student/Assig

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B and C please

"A HW9 STAT201. Correlatic C www.webassign.net/web/Student/Assignment-Responses/submit?dep-17562372 Tho figure for this exercise is a scatterplot of average math test score versus parcant of graduating saniors who took tho test for the 50 states. Tha rogression line for these data is axprassad with the following formula. 575 475 1020304050 Percent taking teat Average math- 575 1.11 (Percent took) A) From the choices below, the best interpretation of the slope estimator is For each 1.11 point decrease in average math test scores, the percentage of high school graduates taking the test increases by 1% 1f all high school seniors in a particular state take the exam, the average math score is expected to be 575 points For each 1-percent increase in the percentage of high school graduates taking the test, the average math test decreases 1.11 points For each 1-percent decrease in the percentage of high school graduates taking the test, the average math test score decreases 1.11 points 1f no high school seniors in a particular state take the exam, the average math score is expected to be 575 points B) In a certain state, only 9% of graduates take the test. what is the predicted average math test score for this state? Round the answer to two decimal places.) C) Suppose that the avarago math tast scora was 572 for the state in part (b). What is the rasidual (prediction arror) for this stato? Round the answer to to two decimal places.) 2-20 PM 12/5/2017 Type here to search

Explanation / Answer

B)from aboe given equation

predicted average math test score =575-1.11*9 =565.01

c)as we know that residual =actual-predicted value =572-565.01=6.99

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