A cellphone provider has the business objective of wanting to determine 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 400 subscribers. The results Indicate that 93 of the subscribers would upgrade to a new cellphone at a reduced cost. Reducing the price will be profitable if at least 20% of the subscribers would upgrade. Complete parts (a) and (b) below. H R0.20 D. Ho RS0.20 H, >0.20 H,: 0.20 OC. Ho n20.20 H, *«0.20 What is the test statistic? ZATAT "O (Type an integer or a decimal. Round to two decimal places as needed.) What is the p-value? The p-value is. (Type an integer or a decimal. Round to three decimal places as needed.) What is the final conclusion? the null hypothesis. There sufficient evidence that the percentage of people who would upgrade to a new cellphone at a reduced cost is 20%. b. How would the manager in charge of promotional programs concening cellphone upgrades use the results in (a)? The manager suggest reducing the price.
A cellphone provider has the business objective of wanting to determine 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 400 subscribers. The results Indicate that 93 of the subscribers would upgrade to a new cellphone at a reduced cost. Reducing the price will be profitable if at least 20% of the subscribers would upgrade. Complete parts (a) and (b) below. H R0.20 D. Ho RS0.20 H, >0.20 H,: 0.20 OC. Ho n20.20 H, *«0.20 What is the test statistic? ZATAT "O (Type an integer or a decimal. Round to two decimal places as needed.) What is the p-value? The p-value is. (Type an integer or a decimal. Round to three decimal places as needed.) What is the final conclusion? the null hypothesis. There sufficient evidence that the percentage of people who would upgrade to a new cellphone at a reduced cost is 20%. b. How would the manager in charge of promotional programs concening cellphone upgrades use the results in (a)? The manager suggest reducing the price.
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.4: Collecting Data
Problem 2E
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