The random variable X is normally distributed Also, it is known th a tP (X 150) 0 10 a Find the population mean if the population standard deviation 15 b Find the population mean if the population standard deviation 25 c Find the population standard deviation if the population mean 136 d Find the p...

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The random variable X is normally distributed. Also, it is known th a tP (X > 150)

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The random variable X is normally distributed. Also, it is known th a tP (X > 150) = 0.10.

a. Find the population mean μ if the population standard deviation σ = 15.

b. Find the population mean μ if the population standard deviation σ = 25.

c. Find the population standard deviation σ if the population mean μ = 136.

d. Find the population standard deviation σ if the population mean μ = 128. LO5

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The random variable X is normally distributed. Also, it is known th a tP (X > 150)

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Business Statistics Communicating With Numbers

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