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1. The average salary for graduates entering the actuarial field is $40,000 (). If the salaries are normally distributed with a standard deviation of $5000 (σ = 5000), find the probability that:
a. An individual graduate (n = 1) will have a salary over $44,500: P(X > 44,500).
b. A group of nine graduates (n = 9) will have an average over $44,500: P()
Describe the difference in the way that past research is found when you use PsycINFO versus the "key article" method of the Science Citation Index/Social Sciences Citation Index (Web of Science).
4th graders in the US take a standardized test for math. The national average score is 237. Did your state, as represented by your students, out perform the national average using a statistically significant measure?
We consider a queueing system in which there are two types of customers, both types arriving according to a Poisson process with rate λ. The customers of type I always enter the system.
Federal administration stated that unemployment level in US is 8.6% (population proportion = 0.086). A hypothesis test is to be performed to decide whether unemployment level in NY State differs from national level.
If there is enough evidence to reject the claim of no difference in the ages of the two groups. Use the standard deviations from the samples and the P-value method.
If X = 75, S = 24, and n = 36, and assuming that the population is normally distributed, construct a 95% confidence interval estimate for the population mean, µ.
Evaluate the value of the F statistic for Devices- I plan an experiment to test the latest conflicting diet programs. The factor for Diet will involve three different levels: low fat, low carbohydrate, and low calorie. The other factor will involve..
The ratings discussed in Problem 3 were constructed because the company felt that the moisture levels in the raw material were causing them to have problems in their plant. The data set rat ings2 . txt contains both the ratings and the correspondi..
Give an estimate of the difference in gender proportions that favored Commercial A. Also construct a large-sample 95% confidence interval for this difference.
Problem: What is the probability that a randomly chosen American adult is a member of one of the two major political parties (Republicans and Democrats)?
an instructor gives his class a set of 13 problems with the information that the next quiz will consist of a random
What is the best point estimate of the population mean and what is a reasonable range of values for the population mean, i.e. upper and lower end of the confidence interval?
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