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You are considering testing a new drug that is supposed to facilitate learning in mentally retarded children. Because there is relatively little known about the drug, you plan to use a nondirectional alternative hypothesis. Since your resources are limited, you can test only 15 subjects. The subjects will be run in a repeated measures design and the data will be analyzed with the sign test, using a = 0.05 2 tail.
Refer to Exhibit 11-1. If the drug has a moderate effect on learning such thatPreal= 0.70, what is the probability you will detect the effect when doing your experiment.
The length of time between breakdowns of an essential piece of equipment is an important factor in deciding on the amount of auxiliary equipment needed to assure continuous service. A machine room foreman believes the time between breakdowns of a par..
A doctor want to estimate the HDL cholesterol of all 20-to 29 year old females. How many subjects are needed to estimate the HDL cholesterol within 2 points with 99%confidence assuming Q= 15.4 ? suppose the doctor would be content with 95% co..
E-education If capital markets are truly efficient, then the sale or purchase of any security at the prevailing market price is generally a zero-NPV transaction. Are you familiar with any transactions that do not follow this principle? If so, what ar..
An alternative has a discounted project cost of $5,215,000 with no salvage value. The estimate was in constant dollars and the discounting used mid-year factors. While the period of analysis is 4 years, the alternative only provides benefits f..
Find the indicated probabilities using Poisson distribution. Then determine if the events are unusual. A newspaper finds that the mean of typo error is five. Find the probability that a) exactly for errors found on a page, b)at most for errors ..
How do the shapes of the t distribution and the z distribution differ? Why do you think we need to use a different distribution when the sample size is small and we have to estimate the standard deviation?
Find the 96th percentile of the distribution of reaction time (at least approximately). That is, find the value such that about 96% of the distribution is below this point - Find the probability the reaction time is 500 or less.
Q1: Fill in the missing components of the following frequency distribution constructed for a sample size of 50:Class Frequency Relative frequency Cumulative relative frequency
Find a necessary and sufficient condition on the parameters for corr
Find a research article that uses a confidence interval. Give either the citation for it or the website address at which you found it. Discuss what the research was trying to show, as well as the results from the confidence interval. Give a little bi..
An analysis of the final test scores in this class shows that the scores follow the normal distribution. The mean of the distribution is 75, and the standard deviation is 8. The professor wants to award an A to a student whose score is in the highest..
What is the decision rule?
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