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? Upper H 0​: mu equals 105 Upper H 1​: mu not equals 105

Answer 1

Answer: Two-tailed test.

Population mean is the parameter which is tested.

Explanation:

Given :
`H_0: \mu=105`

`H_1:\mu\\eq105`

We know that , the alternative hypothesis (
`H_1`) indicates kind of the hypothesis test we need to perform whether ​left-tailed, right-tailed, or​ two-tailed.

Here, the alternative hypothesis (
`H_1`) is two-tailed, so the hypothesis test is a two-tailed test.

Also, the parameter present in the hypothesis is
`\mu` which is a symbol to represent the population mean.

Thus , Population mean is the parameter which is tested.