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esis Test for a Population Proportion
known brokerage firm executive claimed that \( 10 \% \) of investors are currently confident of me nvestment goals. An XYZ Investor Optimism Survey, conducted over a two week period, found ple of 700 people, \( 16 \% \) of them said they are confident of meeting their goals.
he claim that the proportion of people who are confident is larger than \( 10 \% \) at the 0.10 signific
null and alternative hypothesis would be:
\[
\begin{array}{cccccc}
0: p=0.1 & H_{0}: p \leq 0.1 & H_{0}: p \geq 0.1 & H_{0}: \mu \leq 0.1 & H_{0}: \mu \geq 0.1 & H_{0}: \mu=0.1 \\
1: p \neq 0.1 & H_{1}: p> 0.1 & H_{1}: p< 0.1 & H_{1}: \mu> 0.1 & H_{1}: \mu< 0.1 & H_{1}: \mu \neq 0.1
\end{array}
\]
he test is:
two-tailed right-tailed left-tailed \( \sigma^{\varsigma} \)
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