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Imagine that 50 men and 50 women are asked, "Do you favor or oppose capital punishment for those convicted of murder?" In the observed data, 38/50 = .76, or 76% of the men favor capital punishment compared to 32/50 = .64, or 64% of the women.
a. Write null and alternative hypotheses about the possible relationship between sex and opinion about capital punishment.
b. A chi-square test of the statistical significance of the relationship has a p-value of .19. Is this evidence that there is a relationship? What is the justification for this conclusion?
c. Calculate the value of the chi-square statistic.
d. In part (b), the p-value was given as .19. Write a sentence that interprets this number.
Determine the greatest acceleration with which the 1-Mg forklift can raise the 750kg crate withour causing the wheels at B to leave the ground. the centers of mass for the forklift and the crate are located ar G1 and G2 respectively.
Use a 0.05 significance level to test the claim that success is independent of the method used. If someone wants to stop smoking, does the choice of the method make a difference?
a researcher wishes to compare how students at two different schools perform on a math test. he randomly selects 40
Are the residuals from such a regression independent? Is there a difference in model fit and independence of residuals when using infant death rate as a response variable?
Does a regression model imply causation? Why or why not? Provide an example which provides and independent and dependent variable from your place of work.
americans have become increasingly concerned about the rising cost of medicare. in 1990 the average annual medicare
Document the 2NF and the 3NF stages by explaining how each table, and each field in that table complies with the appropriate normalization rule. Use your own words, incorporating normalization and functional dependency terminology.
Construct a 95% confidence interval estimate for the proportion of Americans who decided what to make for dinner either at the last minute or that day.
For the following hypothesis test where H 0 : m £10 vs. H a : m >10, we reject H 0 at level of significance a and conclude that the true mean is greater than 10 when the true mean is really 8.
a stastics instructor randomly selected four bags of oranges each bag labeled 10 pounds and weighed the bags. they
An investor plans to develop a regression model for the appraisal value (in thousands of dollars) of property in her city (Y) based on 5 numerical variables:
Consumer Review posts reviews and ratings of a variety of products on internet. The following is a sample of 20 speaker systems and their ratings (www.audioreviews.com).
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