Exercise 9.34 concerned an industrial plant that may be exceeding pollution limits. An environmental action group took four readings to analyze whether the true mean discharge of wastewater per hour exceeded the company claim of 1000 gallons. When we make a decision in the one-sided test by using α = 0.05:
a. If the plant is not exceeding the limit, but actually μ = 1000, there is only a 5% chance that we will conclude that it is exceeding the limit.
b. If the plant is exceeding the limit, there is only a 5% chance that we will conclude that it is not exceeding the limit.
c. The probability that the sample mean equals exactly the observed value would equal 0.05 if H₀ were true.
d. If we reject H₀, the probability that it is actually true is 0.05.
e. All of the above.