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We wish to estimate the population proportion. We want to be 95 percent confident of our results and we want the estimate to be with .01 of the population parameter. No estimate of the population proportion is available. What value should we use for p?
A. 1.96
B. .01
C. .50
D. We cannot complete the problem, we need more information.
At α = .05, is there a difference in variances? Illustrate all steps clearly, including illustration of the decision rule.
In a study of elephants a researcher wishes to determine the average weight of a certain subspecies of elephants. From previous studies, the standard deviation of the weights of elephants in this subspecies is known to be 1500 pounds.
Determine the probability that between 5 and 10 minutes will pass between successive occurrences.
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The first three digits of a university telphone exchange are 452. if all the sequences of the remaining four digits are equally likely, what is the probability that a randomly selected universtiy phone number contains seven distinct digits?
What is an example of two variables that are likely to be correlated because they are both changing over time?
Use Random Number Generation (RNG) in Analysis ToolPak of Excel to generate n = 5 observations from the Normal distribution N(20, 5). Construct the 95% confidence interval for μ.
Determine estimated average starting salary for school with average GMAT of 600 points?
A survey of college students collected information on several variables: Distance from Home, Age, Major, Gender, and Class. The variable Major is
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A certain airplane has two independent alternators to provide electrical power. The probability that a given alternator will fail on a 1-hour flight is .02. What is the probability that:
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