Question

The mean annual incomes of certified welders are normally distributed with the mean of $50,000 and a standard deviation of $2,000. The ship building association wishes to find out whether their welders earn more or less than $50,000 annually. The alternate hypothesis is that the mean is not $50,000. Which of the following is the alternate hypothesis?A. H1: ? ? $50,000.

B. H1: ? < $50,000.
C. H1: ? ? $50,000.
D. H1: ? = $50,000.

Answer 1

Therefore, for the case above; the Alternative hypothesis is;

H1: is not equal to $50,000.

H1: ≠ $50,000.

Explanation:

The null hypothesis (H0) tries to show that no significant variation exists between variables or that a single variable is not different than its mean.

While an alternative Hypothesis (Ha) attempt to prove that a new theory is true rather than the old one. That a variable is significantly different from the mean.

Therefore, for the case above; the Alternative hypothesis is;

H1: is not equal to $50,000.

H1: ≠ $50,000.