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1. A measure of dopamine (a neurotransmitter) activity is available for 14 acute schizophrenic patients and 14 chronic schizophrenic patients. Do acute and chronic schizophrenics differ in dopamine activity?
2. A large school district needs to know the range of scores within which they can expect the mean reading achievement score of their sixth-grade students. A random sample of 50 reading achievement scores is available.
Find the margin of error for this poll if we want 90% confidence in our estimate of the percent of American adults who do not use e-mail.
1.regular exercise is supposed to make your heart stronger and lower the resting pulse rate. 91 individuals reported
1 a sample of 100 elements produced a mean of 48 and a standard deviation of 8. the 99 confidence interval for the
Perform a parametric analysis by assessing the fractional change in the probability of failure with respect to a small change in the mean and standard deviation of selected variable.
To find the minimum or maximum of a function that is not constrained, that is, there are no restrictions on range of the function, you take the derivative of the function, set it equal to zero, and solve for the variable. The intuition is that th..
Why is statistical significance not necessarily of practical important difference to a business decision? Provide an example and explain.
In one paragraph, reflect on what you have learned so far in this course. Determine the most interesting, unexpected, or useful piece of knowledge that you have learned. Provide a rationale for your response.
There are two types of dependent samples: Those that measure something before and after an "event" and those that matching two samples of the same phenomena being observed. Which of the following is NOT true about such a test:
A sampling inspection program has a 0.10 probability of rejecting a lot when the true proportion of defectivesis 0.01, and a 0.95 probability of rejecting the lot when the true proportion of defectives is 0.03. If 0.01 is the AQL and 0.03 is the L..
Describing capability. If the mesh tension of individual monitors follows a Normal distribution, we can describe capability by giving the percent of monitors that meet specifications.
Do these measures of central tendency agree? Explain. What could the measures of dispersion tell us about the results of the quiz?
question 1 a dice is rolled five times.i what is the probability that it shows 3 even numbers?ii what is the
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