You Were Told That the Mean Score on a Statistics

question 130

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%.What is the probability of a score between 55 and 90?

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Definitions:

Electricity Cost

The amount charged for the consumption of electric power, which can vary based on factors like usage, time of use, and geographical location.

Machine Hours

A measure of production time, calculated by counting the number of hours machines are operating.

Semivariable Cost

Expenses that have both fixed and variable components, changing in total with activity level but not proportionally.

Total Cost

The sum of all costs associated with the production or acquisition of goods or services, including fixed and variable costs.