For a Normal Curve,if the Mean Is 20 Minutes and the Standard

question 60

Multiple Choice

For a normal curve,if the mean is 20 minutes and the standard deviation is 5 minutes,then the area between 11 and 19 minutes is:

• A) 0.4641.
• B) 0.0359.
• C) 0.3848.
• D) 0.8848.
• E) 0.9641.

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Definitions:

Interval Estimate

A variety of values, gathered from sample sources, that is considered likely to envelop the value of a mysterious population parameter.

Profit Margin

A financial metric that calculates the percentage of revenue remaining after all expenses have been deducted from sales.

Sample Variances

A measure of dispersion that quantifies the spread of data points in a sample around the mean.

F-distributed

Refers to having a probability distribution known as the F-distribution, often used in the analysis of variance.