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The average salaryfor graduates entering the actuarial field is $40,000. if the salaries are normally distributed with a standard deviation of $5000, find the probability that an individual graduate will have a salary over $45,000
(b) a group of nine graduates will have a group average over $45,000.
A rare disease has just broken out. Doctor Johnson is trying to help, but while treating patients he might expose himself to the disease.
This sample group has errors with a standard deviation of 54.7ft. At the 5% level of significance, test that the new population has errors with a standard deviation equal to 43.7ft.
A membership drive in a metropolitan area resulted in 500 new members. What is the probability that 175 or more of the new members are significantly overweight?
Measure of average you might be inclined to report and in what sense each value can be considerd typical. (A) as vice president responsible for collective burgaining.(B) as the president the employee burgaining unit.
All standard IQ test scores are normally distributed and are set up so that the mean score is 100. However, the standard deviation differs from test to test.
What can you conclude regarding the information? Who tends to order the most or least number of condiments?
Here are the DMS odor thresholds for 10 untrained students:
Based on your experience using ANOVA and Nonparametric tests, what additional information would you recommend to the key decision maker solve the challenges given in a company that provides software solutions to wide range of clients?
What is the value of the population mean? What is the best estimate of this value? Explain why we need to use the t distribution. What assumption do you need to make?
Compute mean and standard deviation for sample of N = 8 females and sample of N = 8 for males.
A cereal manufacturer seeks to test their newest product against competitor's. A group of 100 children was asked to measure each brand, and then to express a preference.
What are the assumptions necessary to use the z-series test? What are the assumptions necessary of use the t-series test?
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