Question

1) Choose from the Following: Gaussian Distribution, Empirical Rule, Standard Normal, Random Variable, Inverse Normal, Normal Distribution, Approximation, Standardized, Left Skewed, or Z-Score.

Same as the Normal Distribution

A statement whose reliability is based upon observation and experimental evidence; formulas based upon experience rather than mathematical conclusions.

A [_______ ________] is a quantity resulting from a random experiment that can assume different values by chance.

A result that is not exact, but is accurate enough for some specific purposes.

The normal distribution that has a mean of zero and standard deviation of one is called the [________ _________]?

[____________________] data always have a mean of 0 and a standard deviation of 1 regardless of μ and σ.

The [_______] is also referred to as the standard normal deviate or just the normal deviate.

Theoretically, the mean, median, and the mode are all equal for any [____________ ____________].  

Due to its continuous nature, the normal function can be inverted so that endpoints of intervals may be derived from probabilities.

In a [_________________] distribution, we expect that the median will be greater than the mean.

2) The mean amount of gasoline and services charged by Key Refining Company credit customers is $70 per month. The distribution of amounts spent is approximately normal with a standard deviation of $10. What is the probability of selecting a credit card customer at random and finding the customer charged between $70 and $83? (Round to four decimal places).

Answer 1