The null and alternative hypothes is is,
\(H_{0}: P=0.58\)
\( H_{1} : p>0.58\)
Given,
proporion of \(c \in 0\) beliene the economy will improve next year is,
$$ \hat{p}=\frac{x}{n}=\frac{713}{1178}=0.61 $$
The teot statistic is,
$$ \begin{aligned} z &=\frac{\hat{p}-p_{0}}{\sqrt{\frac{p_{0} a_{0}}{n}}} \\ &=\frac{0.61-0.58}{\sqrt{\frac{0.58 \times 0.42}{1178}}} \\ 2=& 2.09 \end{aligned} $$
The value of teot statistic for this teot is,
$$ z=2.09 $$
A survey of 1138 CEOs finds that 713 believe the economy will improve next year. We...
What is the value of the test statistic z for this test?
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