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The average height of flowering cherry trees in a nursery is 11 feet. If the heights are normally distributed with a standard deviation of 1.6, find the probability that a randomly selected cherry tree in this nursery is less than 13 feet tall.
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Part 1 of 9 -Question 1 of 251.0 PointsFind the z-score for each student and indicate which one has a better relative position. An Art Majorearned a grade of 46 on an exam with= 50 and s = 5; A Theater Major earned a grade of 70 on anexam with= 75 and s = 7.A.Both students have the same score.B.The art major has a higher relative position than the theater major.C.The higher score cannot be determined.D.The theater major has a higher relative position than the art major.Reset SelectionPart 2 of 9 -Question 2 of 251.0 PointsIf P(A) = P(A|B), then events A and B are said to beA.exhaustiveB.complementaryC.mutually exclusiveD.independentReset SelectionQuestion 3 of 251.0 PointsWhat is the probability of drawing two queens in a row from a standard deck of cards withoutreplacement?A.0.0059B.0.0385C.0.0045
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D.0.0015Reset SelectionPart 3 of 9 -Question 4 of 251.0 PointsSuppose that 50 identical batteries are being tested. After 8 hours of continuous use, assume that a givenbattery is still operating with a probability of 0.70 and has failed with a probability of 0.30.What is the probability that between 25 and 30 batteries (inclusive) will last at least 8 hours?A.0.7792B.0.1186C.0.0839D.0.9169Reset SelectionQuestion 5 of 251.0 PointsThe following data were obtained from a survey of college students. The variableXrepresents thenumber of non-assigned books read during the past six months.x012345P(X=x)0.200.250.200.150.100.10Find P( X3)A.0.85B.0.80C.0.20D.0.15Reset Selection
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