Find the indicated probability.? HEEEEEEEELP?

OK, here you go sweetheart :)


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


We are given μ = 80, σ = 4


P(70 < X < 75)
= P[(70 - 80)/4 < z < (75 - 80)/4]
= P[- 2.5 < z < - 1.25]
= 0.0994
≈ 9.94%


Hence the required probability is ≈ 9.94%.


Hope this helps !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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