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A researcher wants to know the average height of trees in a plot of land. The researcher randomly samples 18 trees, and finds that the average height is 4.7 meters with a standard deviation of 0.32 meters. Assume that the distribution of the heights of these trees are not strongly skewed and do not have any outliers. The researcher finds a 99% confidence interval for this sample is (4.481, 4.919). Select all that apply:: The margin of error is 0.217. The margin of error is 0.194. We are 99% confident that the true average height of the trees is between 4.481 and 4.919 meters. If we take many other samples from this population, 99% of them will have a sample mean that is between 4.481 and 4.919. The margin of error is 0.219. The margin of error is 0.192. There is a 99% chance that the true mean is 4.7 meters. If we took another sample of 18 trees, the sample mean would definitely be between 4.481 and 4.919 meters.
If there are repeated independent trials and there are only two outcomes, what distribution should be used?
Assume you are the manager of a paint manufacturing factory. Your company has received complaints from customers that the containers hold less than the amount printed on them.
The total profit (in dollars) for sales of x rowing machines is given by P(x) = -0.2x^2 + 300x - 200. What is the profit if 500 are sold? For what value of x will the profit be at a maximum?
Two cards are drawn successively and without replacement from an ordinary deck of playing cards. Compute the probability of drawing-- A heart on the first draw, a club on the second draw.
Use Excel and determine the number of each type of person that will be needed to complete the job within the allotted time and at minimum cost.
A sample of 50 male and 50 female infants were put on an experimental infant formula. After two weeks the parents of each infant were asked to fill out a questionnaire concerning infant satisfaction on the formula. One of the questions was "Did Ba..
The long distance calls made by the employees of a company are normally distributed with a mean of 6.3 minutes and a standard deviation of 2.2 minutes. find the probability that a call
Draw two pie charts, which allow the total yearly exports to be compared. Explain the trend in the export of fish as shown in the two pie charts.
examples of hotel functions include setting daily room rates attracting events meetings conferences etc. managing hotel
How does this probability compare to the probability that the word will be received correctly if we didn't use check bits, in which case all 4 bits would have to be received correctly for the word to be correct?
The probability that it is a camper with Canadian license plates is 0.09. What is the probability that a camper entering the Luray Caverns has Canadian license plates?
An experimental study is designed to test the potency of a drug on 16 calves. Previous studies have shown that a 10-mg dose of the drug is lethal 7% of the time within the first 7 hours.
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