Question: An investigator feels that she may be able to recognize babies at risk from fetal alcohol syndrome due to the fact that they have lower birth weights than would be predicted from their mother’s pre-pregnancy weight. To establish this she must first determine whether there is a predictive relationship between a mother's weight and her infant's birth weight so she collects the following data:

a. Construct the appropriate type of graph for these data. Label the axes appropriately and provide an appropriate title for the graph. (4 points)

b. Using SPSS, analyze this data using the appropriate statistical test (3 points)

c. What is the value of r² and what does this tell you? (2 points)

d. Is this better than would be expected by chance alone? Explain (2 points)

e. What is the formula for the line that describes the relationship between mother’s pre-pregnancy weight and infant birth weight? (Base formula is y = mx +b… what is m and what is b?) (3 points)

f. Use that formula to predict the birth-weight of a baby born to a woman weighing (i) 42kg (i) 75kg. (2 points)