A well-known brokerage firm executive claimed that 30% 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 600 people, 38% of them said they are confident of meeting their goals. Test the claim that the proportion of people who are confident is larger than 30% at the 0.05 significance level. The null and alternative hypothesis would be: �0:�≥0.3 �1:�<0.3 �0:�≤0.3 �1:�>0.3 �0:�≥0.3 �1:�<0.3 �0:�=0.3 �1:�≠0.3 �0:�≤0.3 �1:�>0.3 �0:�=0.3 �1:�≠0.3 The test is: two-tailed left-tailed right-tailed The test statistic is: (to 3 decimals) The p-value is: (to 4 decimals) Based on this we: Fail to reject the null hypothesis Reject the null hypothesis

A well-known brokerage firm executive claimed that 30% 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 600 people, 38% of them said they are confident of meeting their goals. Test the claim that the proportion of people who are confident is larger than 30% at the 0.05 significance level. The null and alternative hypothesis would be: �0:�≥0.3 �1:�<0.3 �0:�≤0.3 �1:�>0.3 �0:�≥0.3 �1:�<0.3 �0:�=0.3 �1:�≠0.3 �0:�≤0.3 �1:�>0.3 �0:�=0.3 �1:�≠0.3 The test is: two-tailed left-tailed right-tailed The test statistic is: (to 3 decimals) The p-value is: (to 4 decimals) Based on this we: Fail to reject the null hypothesis Reject the null hypothesis

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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