Question

A one tailed Alternative Hypothesis reflects that:

a. That an upper tail is the best way to express our expectation

b. The sample value is different from the Null value

c. No assumption about the sample value and the Null value

d. The sample value is either less than or greater than the Null value

Answer 1

ANSWER: Option d

The sample value is either less than or greater than the Null value

EXPLANATION:-

The one-tailed Alternative Hypothesis can be H₁: µ<µ₀

  or

H₁: µ>µ₀

Where µ is sample value and µ₀ is Null Value.

one-tailed test allows the possibility of effect in one direction .A one-tailed test should be used where the goal is to determine if the value of a mean of a sample is significantly greater than the value of the mean for the population. The one-tailed test is also used where the goal is to determine if the value of a mean of a sample is significantly greater than the value of the mean of another sample.