Question

A manufacturer of generator shafts finds that it needs to add additional weight to its shafts in order to achieve proper static and dynamic balance. Based on experimental tests, the averagee weight it needs to add is u=39 gm with o = 10 gm. Assuming a normal distribution, from 1000 randomly selected shafts, how many would be expected to need an added weight in excess of 48 gm? What integral gives the probability that a generator shaft in the random sample will be expected to need an added weight in excess of 48 gm? (x-39)2 2(102 dX 1 10/27 48 (Type exact answers, using t as needed.) The number of generator shafts expected to need an added weight in excess of 48 gm is (Round to the nearest whole number as needed.)

Answer 1

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Gaathi /- Date Pd ovu kou |( ,2) 2 PCX 4 8) 48 wiu get we and Now M39 2(ID)2 48 P(X 48) 1- P(x 48) We X-HacNO) 48-39 X-31 -P C 1-P(2 0 9) =1-6,(0. 9) gret ta bie hne Cwe 0 85 S9 399 0.94060J Page No.

ne enerator hafs epecteg in to added oeight eoce a need au sapple ano on 1000 out is given Ooo x PIX>98) 000 0 18 4060) Anuwers