The Next Questions Are Based on the Following Information

Multiple Choice

The Next Questions Are Based On The Following Information:
A hydraulic press is operating correctly when the standard deviation of the pressure is less than 120 pounds-per-square-inch (psi) .Suppose you take a random sample of 15 measurements throughout the day of the psi and find the standard deviation to be 148.Suppose you want to test whether the press is operating correctly.
-What are the appropriate null and alternative hypotheses?

A) H₀ : σ² = 120² and H₁ : σ² > 120²
B) H₀ : σ = 120 and H₁ : σ < 120
C) H₀ : σ = 120 and H₁ : σ ≠ 120
D) H₀ : σ² > 120 and H₁ : σ² ≤ 120