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A business journal investigation of the performance and timing of corporate acquisitions discovered that in a random sample of 2,737 ?firms, 744 announced one or more acquisitions during the year 2000. Does the sample provide sufficient evidence to indicate that the true percentage of all firms that announced one or more acquisitions during the year 2000 is less 29?%? Use α=0.01 to make your decision.
1) What are the hypotheses for this? test?
2) Identify the rejection region for the test.
3) Is the null hypothesis rejected?
If the code does not start with a vowel, then there must be 2 consecutive positions in the code which contain the same vowel. (For instance, both baal and blaa are acceptable codes.)
customers arrive at a single server facility at poisson rate of 40 per hour. when two or fewer customers are present a
assume there is a rope with the length of 10 feet alexa will cut it anywhere along the ropes length with equal
The average patient should pay no more than $250 out-of-pocket? State your hypotheses and decision rule. (b) Is this a close decision?
Predicting oil spill evaporation. The Journal of Hazardous Materials (July 1995) presented a literature review of models designed to predict oil spill.
In quality-control projects, engineers use charts where item values are plotted and compared with 3-standard-deviation bounds above and below the mean.
When the x1's, x2's, ... , and/or the xk's are equally spaced, the calculation of the 's can be simplified by using the coding suggested in Exercise 15. Rework Exercise 80 coding the x1-values -1, 0, and 1 and the x2-values -1 and 1. (Note that for t..
Consider a random sample of size n from an exponential distribution, Xi ~ EXP(1,eta). a) Show that Q = X1:n - eta is a pivotal quantity and find its distribution.
a campus club sells 500 raffle tickets at a price of 2 each. the raffle offers one 100 dollar prize two 50 prizes and
Using the SPSS, calculate a simultaneous multiple regression with SES, age, and optimism as the independent variables and longevity as the dependent variable.
The following exercises involve constructing definitions:- Construct a complete definition by subclass for the following terms:- quadrilateral and circulating American coin.
If the company wanted to combine the sales data from both companies, how should the new corporate database set up this relationship (take your best guess, one-to-one, or one-to-many)? Why?
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