Forbesreports that women trust recommendations from Pinterest more than recommendations from any other social network platform (Forbeswebsite, April 10, 2012). But, does trust in Pinterest differ by gender? The following sample data show the number of women and men who stated in a recent sample that they trust recommendations made on Pinterest.

women men

sample 150 170

trust recommendations mad on pinterest 117 102

a. What is the point estimate of the proportion of women who trust recommendations made on Pinterest (to 2 decimals)?

b. What is the point estimate of the proportion of men who trust recommendations made on Pinterest (to 2 decimals)?

c. Provide a 95% confidence interval estimate of the difference between the proportion of women and men who trust recommendations made on Pinterest (to 4 decimals). (to)