The life of light bulbs is distributed normally. The standard deviation of the lifetime is 15 hours and the mean lifetime of a bulb is 520 hours. Find the probability of a bulb lasting for at most 528 hours.

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A: We have given that  Mean = 100 Standard deviation = 15

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A: Given Mean=36000 Standard deviations=2600 Z=-1.282

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A: Given: μ=299 mlσ=3 mln=6

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A: mu = 2.1 xabr = 1.95 n = 54 sigma = 0.4

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A: Given, Test1 Test2 Test3 90 94 95 65 75 90 51 77 91 88 84 93 72 88 92 75 84 90 60…

Q: 9. mean = 676; standard deviation = 60 Page

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Q: Please see below.

A: Let X is the time to complete the obstacle course. X~U(a,b) a=8, b=17

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Q: Give your opinion on this. Greek letters are used for statistics as opposed to parameters.

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