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Consider a Set of 50 Measurements with Mean 50 It Is Desired to Test Whether These Measurements Came from Standard

question 63

Essay

Consider a set of 50 measurements with mean 50.2 and standard deviation 18.7 and with the following observed frequencies.  Interval  Observed Frequencies 39.99 and less 124059.99186079.991580-and higher 5\begin{array} { l c } \text { Interval } & \text { Observed Frequencies } \\39.99 \text { and less } & 12 \\40 - 59.99 & 18 \\60 - 79.99 & 15 \\80 \text {-and higher } & 5\end{array} It is desired to test whether these measurements came from a normal population.
-Calculate the expected frequency for the interval 40 - 59.99.


Definitions:

Marsupials

A group of mammals primarily found in Australia and the Americas that carry and nurse their young in an external pouch.

Placental Mammals

Mammals that give birth to live young that have developed inside the uterus with the aid of a placenta.

Bipedalism

Habitual upright walking.

Energy-dense Diet

A diet that is high in calories per serving, typically containing high levels of fat and sugar.

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