Question: The random variable X is normally distributed. Also, it is known that P ( X > 150) = 0.10. [You may find it useful to

The random variableXis normally distributed. Also, it is known thatP(X> 150) = 0.10.[You may find it useful to reference thez table.]

a.Find the population meanif the population standard deviation= 15.(Round "z" value to 3 decimal places and final answer to 2 decimal places.)

b.Find the population meanif the population standard deviation= 25.(Round "z" value to 3 decimal places and final answer to 2 decimal places.)

c.Find the population standard deviationif the population mean= 136.(Round "z" value to 3 decimal places and final answer to 2 decimal places.)

d.Find the population standard deviationif the population mean= 128.(Round "z" value to 3 decimal places and final answer to 2 decimal places.)

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