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In 2002 the Veritas Software company found out that its chief financial officer did not actually have the MBA he had listed on his resume. They fired him, and the value of the company's stock dropped 19%. Kroll, Inc., a firm that specializes in investigating such matters, said that they believe as many as 25% of background checks might reveal false information.
How many such random checks would they have to do to estimate the true percentage of people who misrepresent their backgrounds to within with 98% confidence?
A pie company claims that the number of pies it sells daily is 1600. The President of the company wants to test the accuracy of this claim. He finds a random sample of 36 days' sales shows that the average daily sales were 1500 pies.
Can someone please break these problems down so that I can understand how to get the correct answer.
Calculation of Employees Productivity
Let p represent the population proportion of all numbers in the corporate file that have a first nonzero digit of 1. Test the claim that p is less than 0.301 by using What is the value of the test statistic?
Given that X1 is in the model, does X2 contribute to predicting the dependent variable at the .05 significance level?
If we wish to be 95% certain of avoiding a Type I error, use these data to examine differences in the average distance traveled to the two clinics.
Consider this joint probability distribution P: Determine whether P constitutes a Bayesian network with the DAG X -> Y -> Z:
This problem related to Basic Statistics and it is about computing the change in the average expenditure on students of a school in two years. The change in average expenditure needs to be noted
the pulse rate per minute of adult males is normally distributed with a mean of 72 and a standard deviation of 12. if
Suppose that the actual mean value in the population is , what is the probability of a Type II error (incorrectly accepting a false null hypothesis)?
The automotive center guarantees customers that the service will take no longer than 20 minutes. If it does take longer, the customer will receive the service for half-price. What percent of customer receive the service for half-price?
Develop a linear trend line model for the freshman applications data at State University in problem 1.
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