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Employment data at a large company reveal that 75% of the workers are married, 36% are college graduates, and half of the college graduates are married. What is the probability that a randomly chosen worker is:
Question 1. Neither married nor a college graduate? (answer should be a probability, that is, a number between 0 and 1).
Question 2. Married but not a college graduate? (answer should be a probability, that is, a number between 0 and 1).
Question 3. Married or a college graduate? (answer should be a probability, that is, a number between 0 and 1).
The degree three polynomial f(x) with real coefficients and leading coefficient 1, has -3 and + 4i among its roots. Express f(x) as a product of linear and quadratic polynomials with real coefficients.
Suppose that a quarter is randomly selected, what is the probability that this quarter has high productivity growth and has a large pay increase?
What percent of the Fords traveled 62.000 miles or less during the year?
If it costs 1 cent to make a liver-flavored biscuit and 2 cents to make a chicken-flavored one, what is the optimal product mix for a package of the biscuits in order to minimize the firm's cost?
Scores on a test are normally distributed with a mean of 60.9 and a standard deviation of 12. Find P81, which separates the bottom 81% from the top 19%.
Construct a 95% confidence interval estimate for the mean yield of five-year certificates of deposit.
Develop a multiple regression model with categorical variables that incorporate seasonality for forecasting sales using the last three years of data in the Excel file New Car Sales.
Do the data indicate a significant difference between the frequency distributions for male and females? Test at the .05 level of significance and describe the difference.
Suppose 18 custopmers are selected at random. What is the proability that exactecly ten customers will ask for hot peppers?
Advertisers need to know which age groups are likely to see their ads. Purchasers of 120 copies of Cosmopolitan are shown by age group, (a) Make a bar chart and describe it. (b) Calculate expected frequencies for each class.
Determine change in average number of weekly viewers from to?
Smaller the p-value in test of hypothesis, the more important the results are.
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