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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?
$\begin{array}{l} H_{0} : σ = 2 \\ H_{1} : σ \neq 2 \end{array}$

What type of test is being conducted in this problem?
Two-tailed test
Left-tailed test
Right-tailed test

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Final Answer: The type of test being conducted in this problem is a $Two-tailed test$ .

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Step 1 ：The null hypothesis (H0) is that the standard deviation (σ) is equal to 2. The alternative hypothesis (H1) is that the standard deviation (σ) is not equal to 2.

Step 2 ：This means that the test is looking for a difference in either direction from the hypothesized value, so it is a two-tailed test.

Step 3 ：The parameter being tested is the standard deviation (σ).

Step 4 ：Final Answer: The type of test being conducted in this problem is a $Two-tailed test$ .

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