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Assume that you plan to use a significance level of α = 0.05 to test the claim that p1 = p2. Use the given sample sizes and numbers of successes to find the P-value for the hypothesis test.
imagine you are a manager at a major bottling company. customers have begun to complain that the bottles of the brand
laboratory animals were reared under three different conditions. the animals were randomly assigned to each group. the
A manufacturer of athletic footwear claims that the mean useful lifetime of his product will exceed 50 hours. A random sample of 36 pairs of shoes leads to the following sample results, in terms of useful life: x = 52.3 hours and s = 9.6 hours.
consider an x-bar chart where the x-bar statistic is normally distributed and an associated x-bar control chart exists.
In 2004, the Internal Revenue Service received 312,226,042 individual tax returns. Of these, 12,757,005 reported an adjusted gross income of at least $100,000, and 240,128 reported at least $1 million.27 If you know that a randomly chosen return s..
A test is given to graduates of tw buisness schools A and B. The scores are given out of 100. Test whether the school differ in quality by using Mann- Whitney U- test with a 10% level of significance.
Suppose a friend of a friend claimed to have ESP and agreed to sit just on time and guess at 100 cards. Suppose she made 36 matches. Calculate the probability of this many, or more, matches if only chance is at work, and carefully write a conclusion.
A stock is worth 50 today. Interest rates are zero. It is worth 40, 55 or 70 tomorrow. What are the possible risk-neutral probabilities?
A company has 25 cars of this model in its fleet. What is the level L such that the probability that the average NOX level for the fleet is greater than L is only 0.01?
Samples t test and one that would require a dependent samples t test. And explain what they mean and why they are independent or dependent samples.
(a) Determine the overshoot and rise time for Gp(s) = 1 and for p = 3. (b) Select an appropriate value for p that will give an overshoot of 1 % and compare the results.
Build a scatter plot, Find the value of the linear correlation coefficient r, and find the critical value of r using α=0.05. Determine whether there is sufficient evidence to support a claim of a linear correlation between the two variables.
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