The mean annual incomes of certified welders are normally distributed with the mean of $50,000 and a population 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: µ ≠ $50,000 C)H₁: µ

Question

The mean annual incomes of certified welders are normally distributed with the mean of $50,000 and a population 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: µ ≠ $50,000 C)H₁: µ < $50,000 D)H₁: µ = $50,000

Quizplus · Accepted Answer

The alternate hypothesis states that the mean is not $50,000, which can be represented symbolically as µ ≠ $50,000. Choice B is the only one that represents this in proper statistical notation.

The Mean Annual Incomes of Certified Welders Are Normally Distributed