Examine the following table. 5.2
0.4
0.05
P(x)
0.3
0.1
Does this table represent a probability distribution? Explain your answer.
a. Yes, because the sum of the probabilites is less than one.
b. Yes, because the sum of the probabilities is more than one.
c. No, because the sum of the probabilities is more than one.
d. No, because the sum of the probabilities is less than one.
Please select the best answer from the choices provided

(b) suppose that consolidated power decides to use a level of significance of α = .05, and suppose a random sample of 100 temperature readings is obtained. if the sample mean of the 100 temperature readings is x⎯⎯ = 60.990, test h0 versus ha and determine whether the power plant should be shut down and the cooling system repaired. perform the hypothesis test by using a critical value and a p-value. assume σ = 5. (round your z to 2 decimal places and p-value to 4 decimal places.)