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 175 of the subscribers would upgrade to a new cellphone at a reduced cost. Complete parts? (a) and? (b) below. a. Construct a 95?% confidence interval estimate for the population proportion of subscribers that would upgrade to a new cellphone at a reduced cost.
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p-hat = 175/500 = 0.35 n = 500 Show more…
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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 170 of the subscribers would upgrade to a new cellphone at a reduced cost. Complete parts (a) and (b) below. a. Construct a 99% confidence interval estimate for the population proportion of subscribers that would upgrade to a new cellphone at a reduced cost.
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