4. What is the expected number of classes a student will take in a given semester?

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A: Given that  Z has standard normal distribution  P(Z < a) = 66%

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A: The standard deviation of X is 4 and standard deviation of Y is 8.

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Q: sold 457,000 pencils each year. Furthermore, 90% of the time sales have been between 454,000 and…

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A: Required probability is P(Z>-1.69)

Q: K A media research group uses samples of 5000 households to rank TV shows. The group reported that a…

A: Given that  n = 5000 , p = 16% = 0.16

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A: Given information: Lower bound =0.259 Upper bound=0.591 n=1200 Point estimate=0.425

Q: answer d

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A: Given information: P(Rain)=10%=10100=0.10

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Q: prosperous 4.112 Education and income. Call a household if its income exceeds $100,000. Call the…

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