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Let f (x) = e^x/x^2 . Find all critical points of f (x) and classify them as maximums or minimums. State the intervals where f (x) is increasing and decreasing.
Please show graph or work (pref. derivative).
Let A be the event that the first casting selected is from the local supplier, and let B denote the event that the second casting is selected from the local supplier. Determine: P (A ∩ B)
What can you say about the effect of sample size on confidence intervals?
How does multilinear regression analysis apply to a profession? Specify the dependent value and the set of predictors. Where would you get the data?
Critique the HR manager's planned approach and give him advice on how to proceed. You can assume that a reasonable estimate for the proportion of new hires that are happy with the company is .8.
Find a 90% confidence interval for the difference between the proportion of men and the proportion of women who approved of Reagan's performance. What assumption do you make to use this method?
Derive the formula for the expected value Y, derive the formula for the moment generating function of Y
Based on the information in part (a), what decision should the director make about the books used for the courses if the goal is to keep the cost below $300?
Karefree State University has an enrollment of 18,000. Researchers took a sample of 900 and found 477 students wanted a Field Hockey team. Construct the 95% and 99% Interval estimates for the population proportion.
One of 4 bus drivers is also arbitarily selected. Let Y denote number of students on his bus. Caculate expectations of X and Y: E(X)=?
State the statistical assumptions of this test Using the data set you have selected, select independent and dependent variables.
What will be critical value of chi-square if test is to be performed at 0.025 level? At the 0.05 level?
If $145,000 is to be distributed as a dividend for the current year, what total amount will be distributed to the preferred stockholders?
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