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Consider a normal population with μ=25 and σ=8.0.
A. Calculate the standard score for a value x of 23
B. Calculate the standard socre for a randomly selected sample of 45 with x=23
C. Explain why the standard scores of 23 are different between a and b.
Do you think the Poisson distribution, which assumes independent arrivals, is a good estimation of arrival rates in the following queuing systems? Defend your position in each case.
Use Chebyshev's theorem to find what percent of the values will fall between 120 and 150 for a data set with mean of 135 and standard deviation of 7.5.
What is the probability that the sample mean will be at least 1000? Do you need to use the central limit theorism to answer this question? explain.
Suppose nothing in this environment changes. a) Compute the probability the mean number of attacks over the next 10 years is between 500 and 600.
What are some conditions under which business decisions are made using subjective probability concepts? Could you please cite two examples of subjective probability.
Prepare a 2 slide Microsoft PowerPoint Presentation with speaker notes, how to use a z-test to test the null hypothesis and give an example of z-test to test the null hypothesis
A study was completed that examined the relationship between coffee consumption and level of stress for a group of 50 undergraduate students. The correlation was .373, and it was a two-tailed test, done at the .01 level of significance.
Assume that the heights of 5 year old boys are normally distribued with a mean of 100cm and a standard deviation of 60. What is the sampling distribution of the mean for a sample size of 900 and its confidence interval at the 99% level?
the National Indian Gaming Association are dedicated to Native American affairs. What effect have these organizations had on reducing tribal poverty encouraging prosperity?
question a researcher hypothesizes that individuals who listen to classical music will score differently from the
Pollsters attempt to find out whether or not person is a "likely voter" before they count their opinion in poll. If we suppose 40% of registered voters will really vote.
The mean diameter is 124 millimeters and the standard deviation is 5 millimeters. Find the probability that the diameter of a selected ebaring is between 128 and 132 millimeterds.
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