Mathematics, 17.02.2021 21:30 bryneosburn
PLS HELPP The water spray from a spinning lawn sprinkler covers a circular area of 1961 square feet. If Ray is
standing 30 feet away from the sprinkler as it is spraying water, which of the following statements is
true?
F. Ray will get wet because the sprinkler sprays an area with a radius of 196 feet and 30 < 196.
G. Ray will stay dry because the sprinkler sprays an area with a radius of 14 feet and 14 < 30.
H. Ray will stay dry because the sprinkler sprays an area with a radius of 28 feet and 28 < 30.
J. Ray will get wet because the sprinkler sprays an area with a radius of 98 feet and 30 < 98.
Answers: 1
Mathematics, 21.06.2019 19:40
Afactory makes propeller drive shafts for ships. a quality assurance engineer at the factory needs to estimate the true mean length of the shafts. she randomly selects four drive shafts made at the factory, measures their lengths, and finds their sample mean to be 1000 mm. the lengths are known to follow a normal distribution whose standard deviation is 2 mm. calculate a 95% confidence interval for the true mean length of the shafts. input your answers for the margin of error, lower bound, and upper bound.
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Mathematics, 21.06.2019 21:30
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Answers: 2
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