Answer (Choose 1 answer)
A A cellphone provider has the business objective of wanting to estimate the proportion of subscribers who would upgrade to new cellphone with improved features if it were made available at a substantially reduced cost.B
Let 20.05 1.645; 20.025 = 1.96
Data are collected from a random sample of 250 subscribers and there are 165 of these subscribers would upgrade to a new cellphone at a reduced cost. Find the width of 95% confidence interval estimate for the true proportion of subscribers that would upgrade to a new cellphone at a reduced cost.
Α. 0.0587
Β. 0.0493
C. 0.0986
D. None of the other choices is correct
Ε. 0.1174
ORi
8
