# Question

A cellphone provider has the business objective of wanting to estimate the proportion of subscribers who would upgrade to a new cellphone with improved features if it were made available at a substantially reduced cost. Data are collected from a random sample of 500 subscribers. The results indicate that 135 of the subscribers would upgrade to a new cell-phone at a reduced cost.

a. Construct a 99% confidence interval estimate for the population proportion of subscribers that would upgrade to a new cell-phone at a reduced cost.

b. How would the manager in charge of promotional programs use the results in (a)?

a. Construct a 99% confidence interval estimate for the population proportion of subscribers that would upgrade to a new cell-phone at a reduced cost.

b. How would the manager in charge of promotional programs use the results in (a)?

## Answer to relevant Questions

In a survey of 529 travelers, 386 said that location was very important and 323 said that room quality was very important in choosing a hotel. a. Construct a 95% confidence interval estimate for the population proportion of ...If you want to be 95% confident of estimating the population mean to within a sampling error of ± 5 and the standard deviation is assumed to be 15, what sample size is required? If the inspection division of a county weights and measures department wants to estimate the mean amount of soft- drink fill in 2- liter bottles to within ± 0.01 liter with 95% confidence and also assumes that the standard ...What prevents consumers from sharing data with retailers? A recent Click Fo X-bar Consumer Behavior Survey (bit. ly/ 1fAfJAI) found that 32% of consumers responded “breaches of consumer data.” a. To conduct a follow- up ...Suppose that you are going to collect a set of data, either from an entire population or from a random sample taken from that population.Post your question

0