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?
$h_{0}:\mu = 125$
$h_{1}:\mu\
eq125$
is the hypothesis test left - tailed, right - tailed, or two - tailed?
two - tailed test
left - tailed test
right - tailed test
what parameter is being tested?
population proportion
population mean
population standard deviation

Explanation:

• For the hypothesis test type: In hypothesis testing, if the alternative hypothesis \(H_1\) has the form \(\mu

eq\mu_0\) (where \(\mu_0 = 125\) in this case), the test is two - tailed. A left - tailed test has \(H_1:\mu<\mu_0\) and a right - tailed test has \(H_1:\mu > \mu_0\).

• For the parameter: The symbol \(\mu\) represents the population mean. The population proportion is usually denoted by \(p\), and the population standard deviation is denoted by \(\sigma\).

Answer:

• Is the hypothesis test left - tailed, right - tailed, or two - tailed? Two - tailed test
• What parameter is being tested? Population mean