We want to explore a possible connection between the variables x and /, where x = number of days and words spoken and y = price of MB. a) So far we have the followirtg, f = 12.77x+ b, f = 38.5, Y = 1925, find b. b) Consider the regression equation of y on x given by: y = 116.9 x + 115.725 along with I* = 24.6, x = 2,46, s" = 3.77 and n = 10. Construct. a95% Prediction hrterval for the true value of y if xo = 4. c) Interpret your interval. d) Is the true value of y (for xo = 4) in this PI? Why or why not? Explain
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