A well-known brokerage firm executive claimed that 10% 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, 18% of them said they are confident of meeting their goals. Test the claim that the proportion of people who are confident is larger than 10% at the 0.01 significance level. The null and alternative hypothesis would be: Ho: µ < 0.1 Ho:p = 0.1 Ho:p > 0.1 Ho:µ > 0.1 Họ:µ = 0.1 Ho:p< 0.1 H1: µ > 0.1 H1:p + 0.1 H1:p < 0.1 H1:µ < 0.1 H1:µ + 0.1 H1:p > 0.1 %3D The test is: right-tailed left-tailed two-tailed The test statistic is: (to 3 decimals) The p-value is: (to 4 decimals) Based on this we: O Reject the null hypothesis O Fail to reject the null hypothesis

A well-known brokerage firm executive claimed that 10% 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, 18% of them said they are confident of meeting their goals. Test the claim that the proportion of people who are confident is larger than 10% at the 0.01 significance level. The null and alternative hypothesis would be: Ho: µ < 0.1 Ho:p = 0.1 Ho:p > 0.1 Ho:µ > 0.1 Họ:µ = 0.1 Ho:p< 0.1 H1: µ > 0.1 H1:p + 0.1 H1:p < 0.1 H1:µ < 0.1 H1:µ + 0.1 H1:p > 0.1 %3D The test is: right-tailed left-tailed two-tailed The test statistic is: (to 3 decimals) The p-value is: (to 4 decimals) Based on this we: O Reject the null hypothesis O Fail to reject the null hypothesis

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 8CR

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