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Two statisticians independently estimate the variance of the same normally distributed population, each using a random sample of size 10. One of their estimates is 3.18 times as large as the other. In such situations, how likely is the larger estimate to be at least 3.18 times the smaller one?
Calculate P value? Calculate critical value?
Assuming the manufacturer's claim is correct, what is the probability that the mean of the sample is 47,860 miles or less?
Assume the distribution of amounts purchased follows the normal distribution. For a sample of 50 customers, answer the following questions. What is the likelihood the sample mean is at least $25.00?
Run an analysis of variance by estimating the missing value. Use a = .05. Make treatment comparisons by using Fisher's least significant difference, with a = .05.
Compute the phi-coefficient for these data and compare it with the result from problem 13. You should find that the sample size has no effect on the strength of the relationship.
question an electronics company wants to compare the quality of their cell phones to the cell phones from three
Pollsters attempt to find out whether or not person is a "likely voter" before they count their opinion in poll. If we suppose 40% of registered voters will really vote.
A random sample of 48 managers of large hotels has mean X‾= 5.91. The null hypothesis for the researcher's test is?
Some studies suggest a beta-carotene intake over 3000 mcg may protect against ?macular degeneration. What percentage of people has a dietary beta-carotene intake of at least ?3000 mcg?
you are throwing a party and ll a bowl with 63 ounces of punch. suppose the expected size of each cup of punch is 2
a population has a mean of 50 and a standard deviation of 13. if a random sample of 36 is taken what is the probability
You are dealt 2 cards from a shuffled deck of 52 cards, without replacement. There are four suits of 13 cards each in a deck of cards
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