In the Health ABC Study, 631 subjects owned a pet and 1978 subjects did not own a pet. There were 274 women among the pet owners and 1195 women among the non-pet owners. Use 4 decimal places.
a) What is the sample proportion of pet owners who were women, p-hatpet?
b) What is the proportion of non-pet owners who were women, p-hatnon-pet?
c) Give a 95% confidence interval for the difference in the two proportions. (Be sure to let population 1 correspond to the group with the higher proportion so that the difference will be positive.)
The lower limit of the 95% CI is?
d) The upper limit of the 95% CI is?