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

   Two-tailed test.

Population mean is the parameter which is tested.

Step-by-step explanation:

Given :  

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

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

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

Thus , Population mean is the parameter which is tested.

can you put the picture up?

step-by-step explanation:

answer: answer is b.

[m < b = 120º]

step-by-step explanation: