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A college wants to only accept the top 15 % of applicants taking their placement test. The test results are normally distributed with a mean of 525 and a standard deviation of 78.What will be the lowest score someone can make and be accepted?
Check that these distributions have the desired property (that is, of lacking a moment generating function).
Suggest some lurking variables that may help explain the association between smoking during pregnancy and children's later test scores. The association by itself is not good evidence that mothers' smoking causes lower scores.
What do these different scores tell you about the tests in Weeks 1, 2, 3, and 4? What is happening to the students' scores over time?
Bond Values. A Microgates Industries bond has a 10 percent coupon rate and a $1,000 face value. Interest is paid semiannually, and the bond has 20 years.
The number of choco chips in an 18 ounce bag of chocolate chip cookies is approximately normally distributed with a mean of 1256 and a standard deviation of 129 chips, What is the probability that a randomly selected bag contains fewer than 1000 c..
During which decade was inflation the highest, as measured by the percentage change in the CPI?
What is an example of a research problem at your organization that would benefit from the use of either descriptive statistics or probability distribution statistics? Explain.
question a recent survey of banks revealed the following distribution for the interest rate being charged on a home
in many ways comparing multiple sample means is simply an extension of what we covered last week. just as we had 3
Identify and interpret the p-value for the test, then construct and interpret the 90% confidence interval for the difference between the population proportions.
If X stands for the r.v. denoting the number of graduate students among the 25 chosen, what is the probability that X3 10?
What is the next test that is performed to determine specifically which of the four groups are different - what statistical test should be used?
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