Directions: Use the seven-step method to solve the following. Use the traditional method and p-value method. Write youranswer on a separate sheet of paper.1. A school administrator claims that less than 50% of the students of the school are dissatisfied by the communitycafeteria service. Test this claim by using sample data obtained from a survey of 500 students of the school where54% indicated their dissatisfaction of the community cafeteria service. Use a = 0.05.

Answered: Directions: Use the seven-step metnod…

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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The brand manager for a brand of toothpaste must plan a campaign designed to increase brand recognition. He wants to first determine the percentage of adults who have heard of the brand. How many adults must he survey in order to be 90% confident that his estimate is within six percentage points of the true population percentage? Complete parts (a) through (c) below. a) Assume that nothing is known about the percentage of adults who have heard of the brand. n = 188 (Round up to the nearest integer.) b) Assume that a recent survey suggests that about 82% of adults have heard of the brand. n = 111 (Round up to the nearest integer.) c) Given that the required sample size is relatively small, could he simply survey the adults at the nearest college? OA. No, a sample of students at the nearest college is a cluster sample, not a simple random sample, so it is very possible that the results would not be representative of the population of adults. OB. No, a sample of students at the nearest…
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The brand manager for a brand of toothpaste must plan a campaign designed to increase brand recognition. He wants to first determine the percentage of adults who have heard of the brand. How many adults must he survey in order to be 80% confident that his estimate is within six percentage points of the true population percentage? Complete parts (a) through (c) below. a) Assume that nothing is known about the percentage of adults who have heard of the brand. n= 114 (Round up to the nearest integer.) b) Assume that recent survey suggests that about 81% of adults have heard of the brand. n=| (Round up to the nearest integer.)

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