Mathematics, 18.12.2020 04:30 hernandezbrandon059
A forest products company claims that the amount of usable lumber in its harvested trees
averages 142 cubic feet and has a standard deviation of 9 cubic feet. Assume that these
amounts have approximately a normal distribution.
What percent of trees contain between 133 and 169 cubic feet of lumber?
Answers: 2
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Candy lives in the center of town. her friend darlene lives 28 miles to the east and her friend dana lives 21 miles north. approximately how far do dana and darline live apart ?
Answers: 1
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Which of the following is the graph of y= square root -x-3
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Yuto solved the equation below. what is the solution to yuto’s equation?
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An engineer is going to redesign an ejection seat for an airplane. the seat was designed for pilots weighing between 120 lb and 161 lb. the new population of pilots has normally distributed weights with a mean of 125 lb and a standard deviation of 28.1 lb. a)if a pilot is randomly selected, find the probability that his weight is between 120 lb and 161 lb.the probability is approximately? b. if 36 different pilots are randomly selected, find the probability that their mean weight is between 120 lb and 161 lb. the probability is approximately? c. when redesigning the ejection seat, which probability is more relevant? . part (b) because the seat performance for a single pilot is more important. b. part (b) because the seat performance for a sample of pilots is more important. c. part (a) because the seat performance for a sample of pilots is more important. d. part (a) because the seat performance for a single pilot is more important.
Answers: 3
A forest products company claims that the amount of usable lumber in its harvested trees
averages 1...
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