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Please answer the following: Prove that the square of an even number is even.
Make sure to show all steps required.
Using a two-tailed test with a=.05 is there a significant difference between the two treatment conditions? c. compute r2 to measure the percentage of variance accounded for the by the treatment effect.
Do the data indicate that the sleeping pill is effective at a 1% level of significance?
At α = .05, is there a difference in variances? Illustrate all steps clearly, including illustration of the decision rule.
Should the finite-population correction factor be used? Why or why not?
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.
How would your colleagues probably react to such a statement of yours? Is their expected (positive or negative) reaction the local cultural habit in your company or is it a wider position common for people in your country?
Describe the data appear the strength of the relationship among variables is sufficient to warrant using linear regression forecasting.
Based on a sample of 49 students, Healthy Lifestyles Incorporated (HLI) would like to apply the central limit theorem to ma ke various estimates. a) Compute the standard error of the sample mean. (Round your answer to 2 decimal places.)
What happens to the confidence interval and the power of the test at a particular point of interest
Explain how the Central Limit Theorem can help you convince your boss that while you can't get rid of sampling error the results from your statistical work (that is based on sampling) can still be useful.
Of the 1,4000 homemakers sampled, 420 were able to identify the brand by name. Estimate the value of the population proportion.
Other research examining the effects of preschool childcare has found that children who spent time in day care, especially high quality daycare, perform better on math and language tests than children who stay at home with their mothers
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