help with questions 1-3 please. 1. Find the equation of the regression line. y=_____+​______x ​(Round the constant three decimal places as needed. Round the coefficient to six decimal places as​ needed.)   2.The best-predicted crash fatality rate for a year in which there are 500 metric tons of lemon imports is ____fatalities per​ 100,000 population. ​(Round to one decimal place as​ needed.)   3. Is the prediction​ worthwhile? A. Since common sense suggests there should not be much of a relationship between the two​ variables, the prediction does not make much sense.   B.Since all of the requirements for finding the equation of the regression line are​ met, the prediction is worthwhile.   C.Since there appears to be an​ outlier, the prediction is not appropriate.   D.Since the sample size is​ small, the prediction is not appropriate.

Find the regression​ equation, letting the first variable be the predictor​ (x) variable. Using the listed​ actress/actor ages in various​ years, find the best predicted age of the Best Actor winner given that the age of the Best Actress winner that year is 59 years. Is the result within 5 years of the actual Best Actor​ winner, whose age was 39 years?   a. Find the equation of the regression line. y= ​(Round the​ y-intercept to one decimal place as needed. Round the slope to three decimal places as​ needed.)   b. The best predicted age of the Best Actor winner given that the age of the Best Actress winner that year is 59 years is   years old. ​(Round to the nearest whole number as​ needed.)

Suppose Ms. Carr is interested in the relationship between her students' 9th grade math final exam scores and the number of hours they spent studying during the year. She collects information for 15 ninth grade students and uses it to obtain the regression equation, where ?x is the number of hours spent studying during the year and ?̂ is the predicted final exam score. ?̂ =1.48?+75.64 The scatter plot displays her results. What is the predicted ?̂ value when a student spends 13 hours studying? Round your answer to one decimal place. Select the correct interpretation. The above predicted value of ?̂  is the predicted final math test score if a student studies 13 hours during the year. the predicted score of 13 out of 15 students. what any student will score on the final exam if they study at least 13 hours. the math final test score that 13 students beat.

A set of X and Y scores has SSX = 15, SSY = 24, and SP = 60. The regression equation for these scores will have a slope constant of ______. a. 6 b. 5 c. 3 d. 4