Assignment: Application 4
Problems Numbers Assigned: 8.55, 8.56, 9.69
Problem 8.55
A)
For each woman try to save when shopping for groceries, construct a 95% confidence interval
estimate of the population proportion.
95% confidence interval estimate of the women buy store band is C.I = (0.9138, 0.9454).
C.I = p ±𝓏α 2
⁄×√P(1−P)
n
Confidence interval = 0.9296 ± 1.96 × 0.008059
= (0.9138, 0.9454).
B:
It is evident that 93% of the adult women buy store bands, 83% use print coupons, 33% buy
groceries online, 72% plan meals around sales products.
Problem 8.56
A:
