A well-known brokerage firm executive claimed that 20% of investors are currently confident of meetingtheir investment goals. An XYZ Investor Optimism Survey, conducted over a two week period, found that ina sample of 400 people, 24% of them said they are confident of meeting their goals.Test the claim that the proportion of people who are confident is larger than 20% at the 0.05 significancelevel.The null and alternative hypothesis would be:=Ho:p ≤ 0.2 Ho:p 0.2 Ho: ≤ 0.2H₁:p > 0.2 H₁:p ‡ 0.2 H₁:μ > 0.2The test is:left-tailed two-tailed right-tailedThe test statistic is:The p-value is:Based on this we:Fail to reject the null hypothesisReject the null hypothesisHo:p ≥ 0.2H₁:p < 0.2(to 3 decimals)(to 4 decimals)Ho:μ = 0.2H₁:μ ‡ 0.2Ho:μ ≥ 0.2 orH₁:μ< 0.2

The population proportion or hypothesized proportion is The sample size is The sample proportion is…

Answered: A well-known brokerage firm executive…

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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