A cellphone provider has the business objective of wanting to determine the proportion of subscribers who would upgrade to a new cellphone withimproved features if it were made available at a substantially reduced cost. Data are collected from a random sample of 400 subscribers. The resultsindicate 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 thesubscribers would upgrade. Complete parts (a) and (b) below.H,: z=0.20OC. Họi 120.20H: x<0.20H,: x40.20OD. Ho s0.20H,: >0.20What is the test statistic?ZSTAT (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. Theresufficient evidence that the percentage of people who would upgrade to a new cellphone at areduced cost is20%.b. How would the manager in charge of promotional programs concerning cellphone upgrades use the results in (a)?The managersuggest reducing the price.

A hypothesis which is tested for plausible rejection is called the Null Hypothesis (typically…

Answered: A cellphone provider has the business…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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