A well-known brokerage firm executive claimed that 20% of investors are currently confident of meeting their investment goals. An XYZ Investor Optimism Survey, conducted over a two week period, found that in a sample of 800 people, 19% of them said they are confident of meeting their goals. Test the claim that the proportion of people who are confident is smaller than 20% at the 0.025 significance level. The null and alternative hypothesis would be: Ho :µ = 0.2 Ho:µ > 0.2 Ho:p > 0.2 H1: µ + 0.2 H1:µ < 0.2 H1:p < 0.2 Но р< 0.2 Но: и < 0.2 Но :р H1:p > 0.2 H1:µ > 0.2 H1:p + 0.2 0.2 The test statistic is: (to 3 decimals) The p-value is: (to 4 decimals)

A well-known brokerage firm executive claimed that 20% of investors are currently confident of meeting their investment goals. An XYZ Investor Optimism Survey, conducted over a two week period, found that in a sample of 800 people, 19% of them said they are confident of meeting their goals. Test the claim that the proportion of people who are confident is smaller than 20% at the 0.025 significance level. The null and alternative hypothesis would be: Ho :µ = 0.2 Ho:µ > 0.2 Ho:p > 0.2 H1: µ + 0.2 H1:µ < 0.2 H1:p < 0.2 Но р< 0.2 Но: и < 0.2 Но :р H1:p > 0.2 H1:µ > 0.2 H1:p + 0.2 0.2 The test statistic is: (to 3 decimals) The p-value is: (to 4 decimals)

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Description: A well-known brokerage firm executive claimed that20% of investors are currently confident of meetingtheir investment goals. An XYZ Investor OptimismSurvey, conducted over a two week period, foundthat in a sample of 800 people, 19% of them saidthey

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.1: Measures Of Center

Problem 4GP

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