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Effectiveness of hunting decoys. Using decoys is a common method of hunting waterfowl. A study in the Journal of Wildlife Management (July 1995) compared the effectiveness of three different decoy types-taxidermy-mounted decoys, plastic shell decoys, and full-bodied plastic decoys-in attracting Canada geese to sunken pit blinds. In order to account for an extraneous source of variation, three pit blinds were used as blocks in the experiment. Thus, a randomized block design with three treatments (decoy types) and three blocks (pit blinds) was employed. The response variable was the percentage of a goose flock to approach within 46 meters of the pit blind on a given day. The data are given in the table on p. 703.† A MINITAB printout of the analysis follows.
(a) Find and interpret the F statistic for comparing the response means of the three decoy types.
(b) Perform the analysis, part a, by fitting and comparing the appropriate linear models. Verify that the results agree.
In part b, the sample have greater variability than part a, but the sample sizes are unchanged. how does the larger variability affect the size of the standard error for the sample mean?
a statistics instructor collected data on the time it takes the students to complete a test. the test taking time is
Write the following compound statements in symbolic form, then use your knowledge of the historical events referred to by the simple statements to determine the truth value of the compound statements.- Nixon resigned the presidency and Lincoln wro..
According to a recent poll, 53% of Americans would vote for an incumbent president. If a sample of 100 people results in 45% who would vote for the incumbent, test the claim that the percentage is 53%. Use a .10 significance level.
suppose that a group of 100 consumers are asked to rate how much they liked the taste of a new soft drink on a 5-point
quality are reliability are becoming important aspects of computer hardware and software. past experience shows that
Compute the sample sizes for Exercise 1 when the finite-population correction factor is ignored. What do you conclude about the importance of the finite population correction factor for this population?
Based on this survey, what conclusions can you reach about the use of the Internet at work.
Calculate Probability of Point Falling Outside Standard Deviation
What is the probability that none of them is defective? What is the probability that at least one is defective? Explain.
Let A be the event that a randomly chosen employee has a college degree and B the event that the chosen employee's income is more than $50,000.
Card holders should be sampled to meet the original requirements of the sample. Then explain the trade-offs that will occur when you lower the sample to $10,000 to meet their budget.
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