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# Probability: Probability distribution, Expected Value

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Harvard University published the age profile of it's first time students. A random sample of 33 students has ten students in their thirties, fifteen students in their forties, five students in their fifties, and three students in their sixties. A student is selected randomly from the sample. Let X be the age of the selected student. Calculate the:
A) Probability that the student is of age 30
B) Probability that the student is of age 50 or 60
C) Probability distribution of X
D) Expected value of X

##### Solution Summary

This solution provides calculations for probability and expected value.

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Harvard University published the age profile of it's first time students. A random sample of 33 students has ten students in their thirties, fifteen students in their forties, five students in their fifties, and three students in their sixties. A student is selected randomly from the sample. Let X be the age of the selected student. Calculate the:
A) Probability that the student is of age 30
B) Probability that the student ...

##### Measures of Central Tendency

Tests knowledge of the three main measures of central tendency, including some simple calculation questions.

##### Measures of Central Tendency

This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.