Question

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?
$h_{0}: mu = 125$
$h_{1}: mu
eq 125$
is the hypothesis test left - tailed, right - tailed, or two - tailed?
two - tailed test
left - tailed test
right - tailed test

Explanation:

In hypothesis testing, if the alternative hypothesis \(H_1\) has the form \(\mu
eq\mu_0\) (where \(\mu_0 = 125\) in this case), it means we are looking for deviations in both directions (less than or greater than the hypothesized value). A left - tailed test has \(H_1:\mu<\mu_0\) and a right - tailed test has \(H_1:\mu>\mu_0\). Since \(H_1:\mu
eq 125\), we are considering two tails (both less than and greater than 125).

Answer:

Two - tailed test