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A population is knows to have a mean of mu=25 and a variance of var=3. Fifty samples are drawn from the population and sample means calculated for each. What is the variance of these sample means?
Microsoft Excel was used on a set of data involving the number of parasites found on 46 Monarch butterflies captured in Pismo Beach State Park.
These are drawn at random and not placed back into the jar. What is the probability that no red gumball is drawn?
Find the probability that they will meet if they arrive independently at random times between 5 and 6 P.M.
suppose that you work for the child social services agency in your county. your job is to investigate instances of
How were "Jeffersonian" or "Republican" goals often inconsistent? Were political and economic leaders, or the American people themselves
Ashley is a hard-core runner. She and all her friends prefer Powerade Ion4 to Gatorade. Explain why Ashley's experience is not good evidence
A computer diskette manufacturer is concerned that some diskettes have bad sectors that would cause a diskette to hold less information than it was intended to hold.
Standard deviation of the population is 9 hours. Give the null and alternative hypotheses. Compute the test and p-value. Use a=0.01 to make your conclusion based on the p-value.
What is the probability that more than 310 people in her sample will listen to music.
The positive effect of water fluoridation on dental health is well documented. One study that validates this is described in the article
Average total daily sales at a small food store are known to be $452.80.- A random sample of 12 days shows = $501.90 and s = $65.00. Using α = 0.05, is the sampling result significant? Explain.
the mean height of women in a country ages 20-29 is 64.2 inches. a random sample of 75 women in this age group is
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