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The rejection region for a two-tail test that uses the standard normal distribution is that area under the distribution lying
a. between 0 and the positive cutoff value for Z.
b. between the positive cutoff value for Z and the negative cutoff value for Z.
c. between 0 and the negative cutoff value for Z.
d. to the right of the positive cutoff value for Z and to the left of the negative cutoff value for Z.
Let S = {c, h, j, q, t, y} be a sample space of an experiment and let E = {c, h}, F = {c, q, y}, and G = {h, j, t} be events of this experiment. (Enter your answers using roster notation. Enter Ø for the empty set.)
The mean of a normal distribution probability is 400 pounds. The standard deviation is 10. What is the area between 415 pounds and the mean of 400 pounds? (Round to 4 decimals)
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