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What questions would you ask? Refer to the previous exercise. Make up your own survey questions (at least six questions). Include at least two categorical variables and at least two quantitative variables. Tell which variables are categorical and which are quantitative. Give reasons for your answers.
In a certain town, 30% of adults have a college degree. The accompanying table describes the probability distribution for the number of adults (among 4 randomly selected adults) who have a college degree. Find the standard deviation for the probab..
Evaluate z statistic for the Wilcoxon rank sum test, standard deviation for the Wilcoxon rank sum test and P-value for the Wilcoxon rank sum test
consider a regression model where y is explained by two regressors x1 and x2 i.e. a regression of the form yi x1ibeta1
Given this information, and assuming a normally distributed population of weights, would you feel very secure in advising management that the machine should be shut down? Use the approximate p-value of the test for assistance in formulating your a..
2. The tar contents of 8 brands of cigarettes selected at random from the latest list released by the Federal Trade Commission are as follows: 7.3, 8.6, 10.4, 16.1, 12.2, 15.1, 14.5, and 9.3 milligrams. Calculate
Deductible. A car owner may buy insurance that will pay the full price of repairing the car after an at-fault accident, or save $12 a year by getting a policy.
Use descriptive statistics to summarize the data from the two studies. What are your preliminary observations about the depression scores?
The following table gives the median incomes of families by level of income and geographical region.
during the national football league nfl season las vegas oddsmakers establish a point spread on each game for betting
Each individual in a sample of nursing home patients was cross-classified both with respect to cognitive state (normal or mild impairment, moderate impairment, severe impairment) and with respect to drug status (psychotropic drug change, psychotro..
Regression analysis works with the basic formula of a line, which is Y = mX + b. We can use it to look at causation. Think about the Lemonade Stand Game.
Suppose a candidate running for sheriff claims that she will reduce the average speed of emergency response to less than 30 minutes.
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