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Let Y1 and Y2 be independent random variables with moment-generating functions MY1 (t) and MY2 (t), respectively. If a1 and a2 are constants, and U = a1Y1 + a2Y2 show that the moment-generating function for U is MU = MY1 (t) × MY2 (t).
suppose the time it takes for a purchasing agent to complete an online ordering process is normally distributed with a
Construct a 90% confidence interval for the difference in true means. State the C.I. in terms of Boston-Buffalo
suppose that you want to estimate the mean ph of rainfalls in an area that suffers from heavy pollution due to the
68% it will rain tomorrow. What is the probability it will not rain tomorrow?
2- to 3-page critique of the article you found. In your critique, include responses to the following:
the quality control manager at a lightbulb factory needs to determine whether the mean life of a large shipment of
Given the following number of hours between breakdowns for 4 machines, are the machines significantly different? If so, how are they different? Which machine is the best? Which machine is the worst?
The key steps to tests of significance are to state H0 and HA, calculate the test statistic, compute the p- value, and make a conclusion based on the given significance level.
a researcher is trying to determine the temperature of lake erie within 1 mile of the shore. he measures the
Only 26% of psychology majors are "satisfied" or "very satisfied" with their career paths as compared to 50% of accounting majors.
Determine which pair of Judges have the nearest approach to the common likings in dance - Do you consider that blindness and insanity are equally associated or disassociated with each other in two age groups or more in one-group than in other?
Suppose X is a binomial random variable with parameters n and p . -Find the PMF of a new random variable generated through the transformation, Y = n-x.
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