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A dependent samples t test is typically more powerful than an independent samples t test because ?
a. reduces participant/subject variability between groups.b. has much higher degree of freedomc. uses twice as many scores in all calulations.d. has more participants in the study.
Find a 95% confidence interval for the mean µ of the population from which the men were selected.
A random sample of n = 16 scores is selected from a normal distribution with a mean of μ = 50 and standard deviation of σ = 10. a) What is the probability that the sample mean will have a value between 45 and 55?
The city of Oakdale wishes to see if there is a linear relationship between the temperature and the amount of electricity used (in kilowatts).
Which of the following is a major difference between the binomial and the hypergeometric distributions?
The condition for the question is that the deck of cards has 52 cards and among them are 12 face cards. What is the probability of choosing 6 face cards out of 8 chosen. Thru Binomial distribution holds( meaning with replacement)
Working at Company X is very stressful for any human being. Medecines Sans Frontires stepped in to see if there is any possible violations of human rights at the notorious Company X.
Find out the z values for 29 and 34 hours. What percent of the garages take between 32 hours and 34 hours to erect? What percent of the garages take between 29 hours and 34 hours to erect?
The population standard deviation was 1.68 years. Using the 99% degree of confidence, what is the confidence interval for the population mean.
Can we conclude that the mean age of the population from which the sample may be presumed to have been drawn is less than 60 years? Let α = .05
You own a Pepsi bottling plant, and you are concerned about filling the bottles to the correct level. Should you conduct a one-tailed or two-tailed hypothesis test? Explain.
An auditor for a Health Maintenance service of Georgia reports 40% of policyholder 55 years or older submit a claim during the year. Fifteen policyholders are randomly selected for company records.
What are the assumptions necessary to use the z-series test? What are the assumptions necessary of use the t-series test?
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