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Assume that you want to construct a 95% confidence interval estimate of a population mean. Find an estimate of the sample size needed to obtain the specified margin of error for the 95% confidence interval. The sample standard deviation is given.
Margin of error, E = 7.9 grams; sample standard deviation, s = 63.3 grams
There is only one pump at the station, and the attendant takes 1 minute to fill up each car. What is the probability that a waiting line will form.
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.
A random selection of accounting firms from three regions is taken and they are asked to state the starting salary for a new accounting graduate. Do a one-way ANOVA to analyze these data using a 1% level of significance:
Back-Pressure Regulator, 30; Adjust Feed Worn, 15; Jam Copper Head, 6; Lost Cooling, 52; Valve Replacement, 8; and Other, 5. Construct a Pareto diagram with a cumulative percent line.
Given that a firm's top executive made over $1 million, what is the probability that the firm's shareholder return was positive?
How much morning, afternoon, and everning advertising time should Excelsior buy to maximize exposure of its commericals.
What is the critical value at the .01 level of significance? What would you conclude at this level of significance?
Suppose you have a distribution, X, with mean = 22 and standard deviation = 5. Define a new random variable Y = 8X - 3. Find the mean and standard deviation of Y.
what is the probability that at least 8 of the words on the test are words that the student knows?
What is the significance of the rules to the appreciation of arnis as a martial art sports?
Briefly discuss the analysis activity in the strategic management process. Why is it important for strategic managers? Explain
write a hypothesis for the following statementsa. the health department is charged with finding out if the rate
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