Thirty-Five Percent of the Students Who Enroll in a Statistics

question 7

Short Answer

Thirty-five percent of the students who enroll in a statistics course go to the statistics laboratory on a regular basis.Past data indicates that 40% of those students who use the lab on a regular basis make a grade of B or better.On the other hand,10% of students who do not go to the lab on a regular basis make a grade of B or better.If a particular student made an A,determine the probability that she or he used the lab on a regular basis.

---

Definitions:

Standard Normal Random Variable

A random variable that follows a standard normal distribution.

Area

The extent or measurement of a surface or piece of land.

z

Often represents a standard score in statistics, indicating how many standard deviations an element is from the mean.

Standard Normal Distribution

The standard normal distribution is a normal distribution with a mean of 0 and a standard deviation of 1, used in probability theory to represent real-valued random variables with unknown distributions.