Based on the Normal Model for Car Speeds (In Km/h)on

question 62

Multiple Choice

Based on the Normal model for car speeds (in km/h) on a road N(77,9.1) ,what is the IQR?

• A)about 6.1 km/h
• B)about 9.1 km/h
• C)about 18.2 km/h
• D)about 12.3 km/h
• E)about 13.7 km/h

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Definitions:

Sample Data

A subset of data collected from a larger population, used to estimate or infer characteristics of the whole population.

Test Statistic

A value calculated from sample data, used to decide whether to reject the null hypothesis in a statistical test.

Critical Value

The threshold value that a test statistic must exceed for the null hypothesis to be rejected in hypothesis testing.

Type I Error

The incorrect rejection of a true null hypothesis, also known as a false positive.