gianemarie gianemarie

03-03-2020
Mathematics

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Solve using normalcdf

Solve using normalcdf class=

Respuesta :

MathPhys MathPhys

04-03-2020

Answer:

0.209

Step-by-step explanation:

Find the sample mean and standard deviation.

μ = 1050

s = 218 / √50 = 30.8

Find the z-score.

z = (1075 − 1050) / 30.8

z = 0.81

Find the probability.

P(Z > 0.81) = 1 − 0.7910 = 0.2090

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