A well-known brokerage firm executive claimed that 90% of investors are currently confident of meeting their investment goals. An XYZ Investor Optimism Survey, conducted over a two week period, found...

A well known brokerage firm executive claimed that 90% of investors are currently confident of meeting their investment goals.


Extracted text: A well-known brokerage firm executive claimed that 90% 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, 94% of them said they are confident of meeting their goals. Test the claim that the proportion of people who are confident is larger than 90% at the 0.005 significance level. The null and alternative hypothesis would be: Họ:p > 0.9 Họ: fe < 0.9="" ho:µ=""> 0.9 Ho:p< 0.9="" họ:p="0.9" họ:="" µ="0.9" h1:p="">< 0.9="" h1:h=""> 0.9 H1:µu < 0.9="" h1:p=""> 0.9 H1:p # 0.9 H1:µ#0.9 The test is: left-tailed right-tailed two-tailed The test statistic is: (to 3 decimals) The p-value is: (to 4 decimals)