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You have been asked to study the effects of an employee-wide training program, in a company of 500 employees, designed to reduce the amount of customer complaints. Describe how you would carry out the study, including the variable or variables you would collect, how you would measure those variables, and what would indicate success.
Your answer must be at least 250 words and must relate to Statistics.
Given the following data, calculate the EMV for each investment alternative. Which is best based on the EMVs you calculated?
Gas consumption of 3 cars (labeled car A, car B, and car C) using 4 different kinds of gasoline. Is there difference among kinds of gasoline?
At the 5% level of significance test whether the bottling process is carried out accurately or whether the filling machinery needs calibration. Use both the critical and the p-value approaches.
It is believed that the range of hourly wages paid to auto mechanics in a large city is $9 (range approx. = 4sigma-squared). If we assume that hourly wages are approximately normally distributed,
Find the probability between the given values for normal distribution.
For the last 18 review periods the average sales figure has dropped to $11,500 with a standard deviation of $4,000. Management is concerned. Perform a hypothesis test to determine if this change in sales is a potential problem.
Determine the probability that each of the 30 students will get computer in working condition?
Divide your data in half, your first 8 observations and your last 7 observations. Then use ANOVA to test to see if there is a significant difference between the two halves of your data. This list of Webpages that Perform Statistical Calculations h..
Use a 0.05 significance level to test the claim that these credit rating are from a population with a mean that is equal to 700.
The probability that student pilot passes the written test for a private pilot's license is 0.7. Find the probability that the student will pass the test: (a) on the third attempt (b) before the fourth attempt.
Assume you choose 20 houses at random. On average, how many houses of twenty would you expect to have DVD? Determine standard deviation of number of houses with DVD?
Set up a hypothesis test. Is Charmers' truthful? Describe by working through hypothesis test.
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