Twenty Percent of the Students in a Class of 400

question 62

Multiple Choice

Twenty percent of the students in a class of 400 are planning to go to graduate school. The standard deviation of this binomial distribution is

• A) 20.
• B) 64.
• C) 8.
• D) 40.

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Definitions:

Ordinary Annuity

A sequence of equal payments made at equal intervals of time, with the first payment occurring at the end of the period.

Compounded Quarterly

Interest calculation method where the interest is added to the principal amount every quarter, causing the interest to be calculated on the new total.

Deferred Annuity

An insurance contract in which payment of annuities is delayed to a future date.

Compounded Annually

The process where interest is calculated and added to the principal amount once every year, leading to an increase in the interest amount for the following year.