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The XYZ Company is concerned about the safety record of its firms employees, and sets aside 25,000 a year for their safety education. The finance vp was also interested in knowing how much money was set aside by similar companies. To estimate that unknown amount, a sample 49 similar companies were studied.
>Results were : X Bar=24,000 and S=1400. Build to 90% CI for the money set aside by the similar companies.
>Based on the CI just computed, do you think that the XYZ Company is setting aside unusual amounts of money, or are they about the same as others?
Then compute the expected number for each interval for a sample of 500. Finally, perform the goodness-of-fit test and summarize your results
What are the null and alternate hypotheses? How many treatments are there? What is the critical value of F at the 5% level of significance? Indicate in words when you would reject the null hypothesis.
When reading about hypothesis testing, what have you found to be the most widely used alpha level? And what is the most widely used alpha level in medical research? If there is a difference, why?
a. Is this a direct or retrograde orbit? Why? b. Where is the satellite located in its orbit?
Determine the lower? bound, rounding to two decimal places. Determine the upper? bound, rounding to two decimal places.
Determine the probability that between 5 and 10 minutes will pass between successive occurrences.
A university published the following distribution of students enrolled in the various colleges:
What is your null hypothesis? What is your alternative hypothesis? What is the value of the SST
A researcher wants to determine if lead levels are different between the top of a glass of water and the bottom of a glass of water.
You have to determine that your cutoff value at level a = 0.05 is 1.645 when testing whether the mean of a population is significantly different from 1.5. If you calculate a test statistic of 1.8 what is the proper conclusion?
Annoying phone calls. A newly hired telemarketer is told he will probably make a sale on about 12% of his phone calls. The first week he called 200 people.
Today, the book value of the machinery is $11265. The tax rate is 23 percent. What are the terminal cash flows in Year 6?
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