In Interval Estimation, the T Distribution Is Applicable Only When

question 5

Multiple Choice

In interval estimation, the t distribution is applicable only when the

• A) population has a mean of less than 30.
• B) sample standard deviation is used to estimate the population standard deviation.
• C) variance of the population is known.
• D) mean of the population is unknown.

---

Definitions:

Independent Variable

In an experiment, the variable that is manipulated or changed to observe its effect on the dependent variable.

Sweets

Food items that are rich in sugar and often used as a treat or dessert.

Dependent Variable

The variable in an experiment that is expected to change as a result of manipulations to the independent variable.

Experimenter's Manipulations

The deliberate alteration of variables by a researcher in an experiment to determine their effects on the outcome.