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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 18:20
The length of a rectangle plus its width is 25 cm. the area is 156 square cm. what are the length and width of the rectangle? separate the answers with a comma.
Answers: 3
Mathematics, 21.06.2019 19:30
ะัf x = y and y= z, which statement must be true? ะพะฐ. -x = -2 b. x= z ะพั. โx = 2 od. 2= x
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Mathematics, 22.06.2019 00:30
Hi iโm not sure how to do question 20 if u could explain how to do it thatโd b great
Answers: 1
What is the percent increase when 7,200 increases by 1,800?...
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