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1) How does difference estimation differ from estimation of the mean?
2) When would you want to estimate the population total instead of the population mean?
3) Under what circumatances do you use a one-sided confidence interval instead of a 2 sided confidence interval?
How would you find the normal approximation to the binomial probability P(x = 5) in part A? Please show how you would calculate µ and σ in the formula for the normal approximation to the binomial, and show the final formula you would use without g..
Computing the expected values for the given probability distribution and evaluate the expected values of the following probability distributions
The diameter of small Nerf balls manufactured at a factory in China is expected to be approximately normally distributed with a mean of 5.2 inches and a standard deviation of .08 inch. Suppose a random sample of 20 balls is selected. Find the inte..
a. Define variables that would tell how many units to purchase from each source. b. Develop an objective function that would minimize the total cost.
A process is out of control when:
State the null and alternative hypotheses for the ANOVA (include definitions of parameters). What assumptions do we need to proceed with ANOVA?
A company wants to know if minorities are more likely to be in certain job categories than others. Their data base codes employees 1 for clerical, 2 for custodial, and 3 for manager. A logistic equation was fit to the data with SPSS.
You own a $46,000 portfolio comprised of four stocks. The values of stocks A, B, and C are $5,600, $16,700, and $11,400, respectively. What is the portfolio weight of stock D?
Derive the formula for the expected value Y, derive the formula for the moment generating function of Y
The lengths of human pregancies are normally distributed with a mean of 268 days and a standard deviation of 15 days.
Estimate the probability that the machine will overflow an 8 oz cup.
Compute the variance and standard deviation of the number that will arrive within two days.
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