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Do women and men have different opinions about affirmative action? Based on a sub sample of 2008 GSS, the output figure below shows respondent's sex (sex) and attitudes toward affirmative action (DISCAFF: Are whites hurt by affirmative action).
Whites hurt by Affirmative action* respondents sex crosstabulation
Respondents sex
Male Female Total
Whites hurt by affirmative action very likely 66 93 159
somewhat likely 193 260 453
not very likely 172 179 351
Total 431 532 963
a. What is the independent variable?
b. What are the differences in attitudes between men and women?
c. What might be some other reasons that influence attitudes toward welfare spending? Suggest at least two reasons.
Credit card companies use a scoring model to determine the credit worthiness of a prospective card holder. Factors such as income, employment, home ownership, and credit history determine one's score.
At α = .01, did yellow fire trucks have a considerably lower accident rate? Determine sample proportions and z test statistic.
Otherwise you lose $1. If you make this wager very many times, what will be the mean outcome?
Difference in the mean number of times men and women order take-out dinners in a month? What is the p-value?
Chebyshev's Theorem states that the percentage of observations in a data set that should fall within five standard deviations of their mean is
Can we conclude that the mean time for a game is less than 3.50 hours? Use the .05 significance level.
The weight of a product is normally distributed with a mean of four ounces and a variance of .25 "squared ounces." What is the probability that the randomly selected unit from a recently manufactured batch weighs no more than 3.50 ounces.
3 voters are randomly selected (with replacement) from a group of 1,500 people. The group is known to be 20% republican. What is the probability that all of them are republicans?
A Manager needs to decide between two machines to put into market following a Weibull distribution. Machine X test unit cost $3000 with beta=3 and theta=500 Machine Y test unit cost $2000 with beta=3 and theta=400
Last week Sarah had exams in Math and in Spanish. On the Math exam, the mean was u, = 30 with a = 5, and Sarah had a score of X - 45. On the Spanish exam, the mean was u, = 60 with 0 = 6 and Sarah had a score of X = 65. For which class must Sarah ..
Car Emissions: Listed below are measured amounts of greenhouse gas emissions from cars in three different categories. The measurements are in tons per year, expressed as CO2 equivalents.
Modern aircraft engines are very reliable. One feature contributing to that reliability is the use of redundancy, where critical components are duplicated so that if one fails, the other will work.
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