The null and alternative hypotheses are given. Determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed. What parameter is being tested?
$\begin{array}{l} H_{0} : p = 0.8 \\ H_{1} : p \neq 0.8 \end{array}$

Two-tailed test
Left-tailed test
Right-tailed test
What parameter is being tested?
Population standard deviation
Population mean
Population proportion
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Answer

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Answer

$Population proportion$

Steps

Step 1 ：Determine the type of hypothesis test based on the alternative hypothesis $H_{1}$ .

Step 2 ：Identify the parameter being tested based on the null hypothesis $H_{0}$ .

Step 3 ：Since the alternative hypothesis $H_{1}$ has a 'not equal to' sign ( $\neq$ ), it indicates a two-tailed test.

Step 4 ：The parameter being tested, represented by the symbol $p$ in the null hypothesis $H_{0}$ , is the population proportion.

Step 5 ： $Two-tailed test$

Step 6 ： $Population proportion$