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Normal distribution with a mean

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Reference no: EM131153464

Suppose that y is a random variable having a normal distribution with a mean equal to 250 and standard deviation equal to 10.

a) Show that the event y< 260 has the same probability as z<1

b) Convert the event y> 230 to the z score equivalent

c) Find P(y<260) and P(y> 230)

d) Find P(y>265), P(y<242) and P(242<y<265)

Reference no: EM131153464

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