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Mathematics, 21.06.2019 18:20
The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%
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Mathematics, 21.06.2019 19:20
Askyscraper is 396 meters tall. at a certain time of day, it casts a shadow that is 332 meters long.at what angle is the sun above the horizon at that time?
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Mathematics, 21.06.2019 22:30
Which of the following represents the factorization of the trinomial below? x^2+7x-30
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Mathematics, 22.06.2019 00:00
Which statement best describes how to determine whether f(x) = x squared- x +8 is an even function ?
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