A population has mean 325 and variance 144. presume the, Ask an Expert

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To obtain the probability for U slash/x and O slash/x

A population has mean 325 and variance 144. Presume the distribution of sample means is generated by random samples of size 36.
1) Find U slash/x and O slash/x.
2) find P(slash/X < 323).
3) Find P (320 less/equal (slash over x) less/equal 322).

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