rozalee14

12.04.2022 • 

Mathematics

A researcher collected the heights of male seniors at a high school. The data collected are normally distributed with a mean of 70.21 inches and a standard deviation of 1.35. What is the z-score of a high school senior who is 68 inches tall?

Enter your answer rounded to the nearest hundredth, like this: 4.23

Ответ:

ymklay1566

12.04.2022

Mathematics

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Z = (x-μ)/sd

Z = z-value
x = observed value
sd = standard deviation

Z = (68-70.21)/1.35
Z = -1.64 (this is below mean average)

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Ответ:

Thejollyhellhound20

18.03.2022

Mathematics

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It is false since the rational function is discontinuous when the denominator is zero. But the denominator is a polynomial and a polynomial has only finitely many zeros. So the discontinuity points of a rational function is finite.

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