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Translate the following statements into symbolic form using capital letters to represent affirmative English statements.
If Saks promotes gift cards, then either Macy's or Bloomingdale's puts on a fashion show.
Are these data consistent with the hypothesis that a vacuum tube's lifetime is exponentially distributed with a mean of 50 hours?
seven persons are staying at a hotel. the hotel has twenty-five floors each with the same number of rooms. each of the
a random sample is selected from a normal population with a mean of m 50 and a standard deviation of s 12. after a
so if you have a variance of 75 for a class average with a standard deviation of - 15. what grade will 96 of the class
an auditor wants to estimate what proportion of a banks commercial loan files are complete. the auditor randomly
in the formula for a variance what is the sum if we dont square the x-u values? hint there is a special name for this
a market-research firm has discovered that 30 of the people who earn between 25000 and 50000 per year have bought a new
a random survey of a small group of high school students collected information on the students age and number of bookd
The test must be performed at the 5% level of significance. According to the null hypothesis, the value of the population mean is parts per million.
Obtain a number of tables, charts and diagrams used to describe quantitative information. Sources could include, for example, newspaper cuttings, building society pamphlets, textbooks or web search.
How large a sample should you take if you want to be 95% confident of the results and you want the error of the confidence interval to be no more than .05?
That is, P(µ-σ ≤ X ≤ µ+σ) = .68 if X has a normal distribution. For non-normal distributions, is it safe to assume that this probability is again 0.68? Explain your answer.
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