A Continuous Random Variable X Is Normally Distributed with a Mean

question 21

Short Answer

A continuous random variable x is normally distributed with a mean of $250 and a standard deviation of $50.Find the z-score for x = 285.

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Definitions:

Approximately Normal

Describes data that roughly follows a normal distribution, though it may not perfectly fit the normal curve.

Z Test Statistic

A type of statistical test where the test statistic follows a normal distribution under the null hypothesis.

Population Proportion

The fraction or percentage of a population that possesses a particular attribute or characteristic.

Sampling Distribution

The framework of distributed probabilities for an established statistic, gathered from random sampling.