Forty Percent of the Students Who Enroll in a Statistics

question 87

Short Answer

Forty percent of the students who enroll in a statistics course go to the statistics laboratory on a regular basis. Past data indicates that 65% of those students who use the lab on a regular basis make a grade of A in the course. On the other hand, only 10% of students who do not go to the lab on a regular basis make a grade of A. If a particular student made an A, determine the probability that she or he used the lab on a regular basis.

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Definitions:

Standard Deviation

A measure that quantifies the amount of variation or dispersion of a set of data values, indicating how much the individual data points differ from the mean.

Median

The middle value or point in a data set, where half the data lies above and half below it.

Empirical Rules

Statistical rules that allow for the determination of probability within a normal distribution, stating percentages of data that lie within certain standard deviations from the mean.

Standard Deviations

Measures of how spread out the numbers in a dataset are, indicating the degree of variation from the mean.