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A set of data items is normally distributed with a mean of 23 and a standard deviation of 5.7. Find the data value in the distribution that corresponds to each of the following z-scores. Round your answers to the nearest tenth.
(a) z = -1.3
(b) z = 2.45
For this purpose, a random sample of 55 plots, each of size 100 square meters, is used. The number of ferromagnetic artifacts for each plot is determined.
There are four auto body shops in a community and all claim to promptly serve customers. To check if there is any difference in service customers are randomly selected from
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The length of human pergnancies is aprox normally distibuted with a mean of 266 days and a standard devation of 16 days what is the probability the pregancy will last betwee
High principal has decided to give an award to any student who scores in the top 10% of statewide scores. How high should a student score be to win this award? Give your ans
In given Exercise, the length of the confidence interval for µ is 257.6 - 200.7 = 56.9 and the length based on the trimmed mean is 244.9 - 196.7 = 48.2. Comment on why the l
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1. Werner Herzog, the director of the film, whose voice you hear as the narrator, says at one point that "we are locked in history, and they [the Paleolithic painters who di
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