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A consumer group conducts crash tests of new model cars. to determine the severity of damage to 2006 Mazda 6s resulting from a 10-mph crash into a concrete wall, the research group tests six cars of this type and assesses the amount of damage. Describe the population and sample for this problem.
The estimated salary range is $4,500, the margin of error should be $100 and the desired level of confidence is 95%.
Penultimate Support Systems makes fairly good speaker and equipment support stands for music groups. The assembly process involves two operations
Compute the sample variance and sample standard deviation as a measure of volatility of monthly total return for Chevron (to 2 decimals): Sample variance and Sample standard deviation.
What is the probability that all three students pick exactly the same card?
A lab test is 95% effective in detecting a disease. The test gives a false positive (reports the patient has disease when they do not) for 1 % of the healthy population tested.
Do you think this statement has any merit? Why or why not? Explain why the manager may have said it and then further substantiate his argument or compose a rebuttal.
Write a short report dicussing the claim that average diastolic blood pressure in 1958 (variable dbp58) is the same for men who were alive in 1968 and for men who were not.
How do we use a least squares regression line? What is the range for the coefficient of determination?
Increasing confidence level will increase width of confidence interval. This is because the fact that increasing confidence interval will increase value of z(α/2), which will increase the size of standard error (z*s/√n).
Suppose Napoleon were using Bayes' theorm to revise his information. To do so, he would have had to make some judgements about P(Prussian and English Join forces |Napoleon Wins) and P(Prussian and English Join forces |Napoleon loses).
Ski Resorts of Vermont, Inc. is considering a merger with Gulf Shores, Inc. of Alabama. The board of directors surveyed 50 stockholders concerning their position on the merger.
A 95% confidence interval for the proportion of all adults who bought a lottery ticket in the past year is (assume Gallup used an SRS)
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