Refer to the study of poor growth in children from Exercise 17.37. Below is a printout from SPSS software that depicts the data for the six cells. For each cell, there is an observed frequency (count), expected frequency (expected count), and adjusted standardized residual (adjusted residual).
a. For boys, what is the observed frequency for having an underlying medical condition?
b. For boys, what is the expected frequency of those having an underlying medical condition?
c. For boys, what is the adjusted standardized residual for those with an underlying medical condition? What does this number indicate?
d. If you used an adjusted standardized residual criterion of 2 (regardless of the sign), for which cells would you conclude that the difference between observed frequency and expected frequency is greater than you would expect if the two variables were independent?
e. Repeat part (d) for an adjusted standardized residual criterion of 3 (regardless of the sign). Are the results different from those in part (d)? If yes, explain how they're different.