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The weight(in pounds)0f 6 vehicles and the variability of their braking distances 9in feet) when stopping on a dry surface are shown in the table. can you conclude that there is a significant linear correlation between vehicle weight and variability in braking disance on a dry surface? use a=0.01
weight,x 5970 /5370 /6500 /5100/5820/4800
It is asserted that a greater proportion of males (= x 1 ) contribute to charity than females (= x 2 ). A survey of male and female contributors to charity showed that of 900 males surveyed
A study of cats and dogs found that 11 of 50 cats and 21 of 50 dogs slept more than 10 hours per day. At the .05 level of significance, is there sufficient evidence to conclude that a difference exists between the proportion of cats and the propor..
Compute the Kappa statistic and its standard error regarding reproducibility of the diagnosis of dyspnea in the clinic.
Use the five-step p-value approach to hypothesis testing and a 0.05 level of significance to determine whether the proportion of full-time students at Miami University is different from the national norm of 0.46.
State the research question and statistical null and alternative hypotheses; and Explain why this test is appropriate and why the correlation, t-test, regression, or ANOVA is not appropriate.
If wages were increased by $1.00, what is the expected effect on the number of complaints received per employee? How can you tell?
What kinds of plots are useful in data screening? What can you do if your data do not meet the assumptions of your statistic?
Their monitoring plan will take a random sample of 5 days sales per month and use the sample mean sales to identify shops that are under-performing. Establish the lower limit sales such that only 5% of the shops would have a sample sales mean belo..
The grades of a sample of 5 students, selected from a large population, are given below. Determine a point estimate for the variance of the population.
Determine the values of mean M and standard deviation s for original sample?
Use this information to construct a probability table, and then calculate each of the following probabilities:
Compare and contrast a Difference of Means test with a Paired Difference test. What, fundamentally, are we testing for in each? When do you use the difference of means?
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