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2. Scores on a math exam have a mean of 78 and standard deviation of 7. Scott scored 71. How many standard deviations above or below the mean did he score? Erica scored 88.5. How many standard deviations above or below the mean did she score? 21 3. The following table is a sample of 10 student's homework grade and quiz 1 grade from my MATH 2200 classes a few years ago. a. Make a scatterplot and describe the direction, forin, strength and any possible outliers. b. Find the LSRL, r, r2, interpret slope and y-intercept in the words of the problem. HW Quiz 1 LSRL 19.2 23 18.3 17.5 H 20 22 9.5 21 19.8 25 Slope 16.2 12 17.1 20 y-intercept 15.2 19 19.2 24 19.5 22.5 c. Predict the quiz 1 grade of a student that scores 19.5 on the HW. Is this a good prediction? Why? d. Predict the quiz 1 grade of a student that scores 5 on the HW. Is this a good prediction? Why? e. Find the residual for the point (19.5, 22.5) f. Are there any outliers? Influential points? Show work