Math graph, Please help :<?

OK, here you go sweetheart :)


We are given μ = 154, σ = 5.34


Hint : Use the standardization formula
z = (X - μ) /σ


P(157 < X < 167)
= P[(157 - 154)/5.34 < z < (167 - 154)/5.34]
= P[0.5618 < z < 2.4345]
≈ 0.2797
≈ 27.97%.


Hence , the required probability rounded to 4dp is ≈ 0.2797.


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