You Were Told That the Mean Score on a Statistics

question 115

Short Answer

You were told that the mean score on a statistics exam is 75 with the scores normally distributed.In addition,you know the probability of a score between 55 and 60 is 4.41% and that the probability of a score greater than 90 is 6.68%.The middle 86.64% of the students will score between which two scores?

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Definitions:

Narcolepsy

A sleep disorder characterized by uncontrollable episodes of falling asleep during the daytime.

Sleep Terror

A sleep disorder causing feelings of panic or dread, typically occurring during the first hours of stage 3-4 non-REM sleep and often remembered only partially.

Insomnia

A condition where one struggles to fall asleep, remain asleep, or achieve refreshing sleep.