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Because of tough economic times, the Indiana legislature is debating a bill that could have significant negative implications for public school funding. There are three possibilities for this bill: (1) it could be passed in essentially its current version; (2) it could be passed but with amendments that make it less harsh on public school funding; or (3) it could be defeated. The probabilities of these three events are estimated to be 0.4, 0.25, and 0.35, respectively.
The estimated effect on percentage changes in salaries next year at Indiana University are estimated as follows. If the bill is passed in its current version, the mean and standard deviation of salary percentage change will be 0% and 1%. If the bill is passed with amendments, the mean and standard deviation will be 1.5% and 3.5%. Finally, if the bill is defeated, the mean and standard deviation will be 3.5% and 6%. Find the mean and standard deviation of the percentage change in salaries next year at Indiana University.
the following table shows part of the probability distribution for a random variable x.x fx0 0.21 ?2 0.153 ?4 0.15a.
A point estimate for the difference between the mean purchases of the users of the two credit cards is:
A particular professor never dismisses class early. Let x denote the amount of time past the hour (minutes) that elapses before the professor dismisses class. Suppose that x has a uniform distribution on the interval from 0 to 10 minutes. The density..
two random samples are taken one from among first-year uva students and the other from among fourth-year uva students.
iq data is thought to be normally distributed with a mean of 100 and a standard deviation of 15. the average iq score
Customers who enter the store, and ask them if they have a Ralph's card. Suppose they solicit 400 customers one day, and find that 160 of them have a Ralph's card.
Let U have a uniform distribution on the interval [0, 1]. Then observed values having this distribution can be obtained from a computer's random number generator.
At the end of 24 weeks of treatment, subjects were classified as responders or non-responders to treatment based on a battery of psychological tests.
The purchasing department has found an excellent global positioning system circuit card in Germany that can provide your firm with a competitive advantage in the marketplace.
In relation to this problem how would you try to develop a frequency distribution with five classes for these data? In relation to this problem how would you, Try to Develop a histogram based on the frequency distribution.
Calculate the actual profit less the expected profit, and classify this difference by source. For the latter, assume that all expense gains are calculated after the gains from the other sources.
When groups are more alike than different, ANOVA assesses the significance of the difference between two groups. When groups are unalike, will findings be more significant?
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