The mean gross annual incomes of certified welders are norma

The mean gross annual incomes of certified welders are normally distributed with the mean of $18,107 and a standard deviation of $1,811. The ship building association wishes to find out whether their welders earn more or less than $18,107 annually. The alternate hypothesis is that the mean is not $18,107. Which of the following is the alternate hypothesis?

H₁: µ < $18,107

H₁: $18,107

H₁: µ = $18,107

H₁: µ $18,107

Solution

H1: µ $18,107

Hypothesis conducted is two tailed, and in two tailed we use not equal in alternative hypothesis