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A well-known brokerage firm executive claimed that 80% of investors are currently confident of meeting their investment goals. An XYZ Investor Optimism Survey, conducted over

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A well-known brokerage firm executive claimed that 80% 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 100 people, 89% of them said they are confident of meeting their goals. Test the claim that the proportion of people who are confident is larger than 80% at the 0.025 significance level. The null and alternative hypothesis would be: Ho:p =0.8 Ho:M =0.8 Ho:u = 0.8 Ho:p =0.8 Ho:M = 0.8 Ho:p= 0.8 H :p 08 Hju > 08 H :u08 H1 :u#0.8 H:p=0.8 O O The test is: right-tailed two-tailed left-tailed The sample statistic is: p = (to 2 decimals) The p-value for this hypothesis test is 0.0122. Based on this we: O Reject the null hypothesis O Fail to reject the null hypothesis

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