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Perception of Time:
Randomly selected statistics students participated in an experiment to test their ability to determine when 1 minute (60 secs) has passed. 40 students yielded a sample mean of 58.3 sec. Assuming that σ = 9.56 sec, is a significance level to test the claim that the population mean is equal to 60 sec. Based on the result, does there to be an overall perception of 1 minute that is reasonably accurate?
how many individuals will I need to sample if I want a 95% margin of error to be no more than 3%, I want to know if the results are significant at = 10%. With the information given.
If one person is selected at random, what is the probability that person is Female?
Determine whether the method of delivering teaching influences adherence with antiretroviral therapy.
The Wilcoxon signed rank test is computed for the data and gives a value W + = 161.5. Using the Normal approximation (without the continuity correction) the P-value.
LSAT scores are normally distributed, with a mean of 150 and s = 10.
By using.02 level of significance, carry out a 5-step hypothesis testing procedure to find out if new processes considerably reduced the wait time.
An advantage of the permutation test over the t test for a difference in means, can Permutation tests be used for tests when we believe the two populations differ under the null hypothesis.
What is the probability that the mean price for a sample of 30 service stations is within $.03 of the population mean (to 4 decimals)?
Suppose that the number of babies born during an hour at a hospital's maternity wing follows a Poisson distribution with a mean of 4 per hour.
Compute the range and interquartile range
How many commercials' worth of data do I need to have a margin of error no more than 3, the correct set of hypotheses
The results of the simple linear regression are provided below.
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