Answer:
We are given:
Determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed.
Since the alternative hypothesis has less than sign, therefore the given hypothesis is left-tailed
What parameter is being tested?
The parameter used is , which denotes the population mean.
Please note:
The type is test determined based on the alternative hypothesis.
If the alternative hypothesis has sign, it means the hypothesis test is two-tailed
If the alternative hypothesis has sign, it means the hypothesis test is right-tailed
If the alternative hypothesis has sign, it means the hypothesis test is left-tailed