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Question: There is some evidence that REM sleep, associated with dreaming, may also play a role in learning and memory processing. For example, Smith and Lapp (1991) found increased REM activity for college students during exam periods. Suppose that REM activity for a sample of n = 16 students during the final exam period produced an average score of M = 143. Regular REM activity for the college population averages µ = 110 with a standard deviation of 0 = 50. The population distribution is approximately normal. A.) Do the data from this sample provide evidence for a significant increase in REM activity during exams? Use a one-tailed test with _ = .01. B.) Compute Cohen's d to estimate the size of the effect. .
What is the equation for this regression model?
The standard deviation of the sample is $3,000. Interpret your findings.
Find out the following: Mean swipe rate, Standard deviation of the swipe rate.
Find the equation of least -squares line and plot the line on the scatter diagram of part (a)
Variance of 4.2 and mean of 23.2 were calculated. Find out 95% confidence interval on mean and standard deviation. Describe any potential problems with this analysis.
Addition Thermo on Probability - If a man is randomly selected for an interview, what is the chance he will Play football or basketball?
a. Solve using the p value approch. b. Solve using the classical approch.
Test whether the relationship between the plan at retirement and residential area using Chi square test.
A random sample of 16 ages is drawn from the population, and we find the sample mean of these observations to be μ = 8.76
Is there significant evidence that this production run doesn't meet specifications? Use a 1% level of significance.
Assume you are using ANOVA to study some phenomenon. There are three treatment levels and a total of 17 people in the study. Complete the following ANOVA table.
The firm examined 35 randomly chosen fax transmissions during the next year, yielding a sample mean of 14.44 with a standard deviation of 4.45 pages.
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