Part B **5. (Continuation of GPA). (a) Obtain a 90% interval estimate for the mean freshman GPA for students whose ACT test score is 24. Interpret it in a sentence. (b) Mabel obtained a 25 on the ACT test. Predict her freshman GPA using a 98% prediction interval. Interpret it in a sentence. Is your interval wider than the one in part (a)? Should it be? (c) Determine the boundary values of the 90% confidence band for the regression line when xh = 25. Is your confidence band wider at this point than the interval in part (a)? Should it be?

the required function is .

step-by-step explanation:

from the given table it is noticed that the graph passing through (-3,7), (0,4), (3,1) and (8,-4).

it is a linear function because the value of y is decrease by one as the value of x increase by 1.

the slope of the function is

the slope of the function is -1 and the y-intercept is 4.

the slope intercept form is

where, m is slope and b is y-intercept.

therefore the required function is . the graph of this function is shown below.

i dont know sorry

step-by-step explanation:

x=6 and x=3

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college