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Use the sign test to test the indicated claim.
A researcher wishes to study whether music has any effect on the ability to memorize information. 82 randomly selected adults are given a memory test in a quiet room. They are then given a second memory test while listening to classical music. 70 people received a higher score on the second test, 11 a lower score, and 1 received the same score. At the 0.05 significance level, test the claim that the music has no effect on the memorization skills.
question 1.nbspa large scale marketing survey was conducted. some of the variables collected weregender nbsp
the number of bank robberies that occur in a large north american city is poisson distributed with a mean of 1.8 per
Compute the value of the discriminant and give the number of real solutions to the quadratic equation
probability based on normal distribution.1.determine the area under the standard normal curve that lies to the left of
Random samples of size 64 are taken from a large population whose mean is 160 and whose standard deviation is 25. What is the mean of the sampling distribution of the sample mean?
Find the area between the graphs of the functions y1 (x) = x ln x and y2 (x) = -4 exp(3ln x) in the interval between the points x1 = 1 and x2 = e.
Select one psychological personality assessment instrument or inventory to serve as the basis of this assignment. Explore the psychological literature to find three to five articles that test the use of this inventory or assessment on obsessive-com..
The management of a department store is interested in estimating the difference between the mean credit purchases of customers using the store's credit card versus those customers using a national major credit card.
From her firm’s computer telephone log, an executive found that the mean length of 64 telephone calls during July was 4.48 minutes with a standard deviation of 5.87 minutes.
In a clinical study of an allergy drug, 114 of 203 subjects reported experiencing significant relief from their symptoms. What is the point estimate of the true proportion of people who reported relief in the population.
625 males, 398 say they have gone to the dentist in the past year. Construct 90% and 95% confidence intervals for the population proportion.
The variance of some data is 37.33 what is the standard deviation?
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