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Introduction to Statistics - Assignment Example

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To investigate this possibility, a random sample of 15 books was selected. The prices of these books at both a bookstore and through Amazon.com were recorded. The prices for the books are given below:…
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Introduction to Statistics
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"Introduction to Statistics"

Download file to see previous pages Analyse each one of the three cases below according to the following steps:
1. What is the appropriate test to implement and why?
2. Set up the null and alternative hypotheses.
3. What is the rejection rule?
4. Test at a significance level of 0.05 and present Excel output (copy and paste in Word document)
5. What is the rejection decision?
6. What is the conclusion?

Question 1
An investor compares the returns on car manufacturers and energy stocks.
He believes that energy stocks perform better.
He recorded 2 random samples of 6 returns in each industry. The numbers are given below: ...Download file to see next pagesRead More
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