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Test the claim that the proportion of Republican voters in a particular city is less than 40 percent. A random sample of 175 voters was selected and found to consist of 30 percent Republicans. Use α = 0.01 and determine the p-value for this sample.
Suppose that the moment generating function of (X, Y )t is ψX,Y (t, u) = exp{2t + 3u + t2 + atu + 2u2}. Determine a so that X + 2Y and 2X - Y become independent.
Sampling variability refers to the idea that different samples will include different individuals
Determine the probability that the given class period runs greater than 50.75 minutes. Determine the probability of choosing the class period runs greater than 50.75 minutes.
let x be the number of people in a household for a certain community. consider the following probability density for x
A jar contains 12 marbles, 5 of which are blue and 7 of which are red. If 4 marbles are chosen at random and without replacement, what is the probability of selecting 3 blue ones and 1 red one?
Nathan wants to approximate a binomial probability by normal curve areas. The number of trials is 50 and the probability of success for each trial is 0.95
for a one-tailed hypothesis test the critical z-value of the test statistic is -2.33. which of the following is true
Give an example of a good decision that you made in the face of some uncertainty. Was the outcome lucky or unlucky? Can you give an example of a poorly made decision whose outcome was lucky?
A random sample of 900 workers in a particular city found 342 workers who had full health insurance coverage. Find a 95% confidence interval for the true percent of workers in this city who have full health insurance coverage.
suppose x the number of flaws in a roll of polyethylene insulated cable follows a poisson process where lambda is 1.1
An upscale restaurant offers a special fixe prix menu in which, for a fixed dinner cost, a diner can select from four appetizers, three salads, four entrees, and five desserts. How many different dinners are available if a dinner consists of one ..
1.using the z table to find the critical values for each p 407 ltbrgta a 0.04 left-tailed test ltbrgtb a 0.05
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