Question

Need # 4, 5, 6, 7, & 8 Please!!

QUESTION 4 A stuly wants to look at the correlation between sugar consumption and the development of cavities. The table below shows the average daily'întake of sugar (g) and the total number of cavities per patient over the one-year study period. Daily Sugar Intake Number of Cavities (M 30 40 150 90 75 25 110 What is the sample correlation cofficient given 2. ,-1128214 212and Ze-0-)-1307 ? a-0.33 b.0.70 QUESTION S What type of correlation does this represent? O a. Strong positive Ob. Strong inverse OCWeak positive O d. Weak inverse QUESTION 6 The investigator wants to construct a regression equation based on his current sample to be able to predict the number of cavities that a What is the slope of the line (i.e. what is b)? patient develops based only on their sugar intake given the standard deviation for the daily sugar intake is 43.25 and the standard deviation for the number of cavities is 141. a. 0.87 b.0.01 C.1.41 .0.50 QUESTION 7 What is the y-intercept (i.e. what is bo)? a. 1.26 b. 0,50 C.0.01 d. 1.15 QUESTION 8 What is the predicted number of cavities for someone who consumes on average 45 grams of sugar a day? b. 1.55 C.0.67 d.1.10

Answer 1

ざ 130 - 2. 12821. 7 СУ : 1-3093 8.5 -42.737 1.gog3 aptidn @ is Lanc ositive po - 1.26