Exhibit 5-8 the Random Variable X Is the Number of Occurrences of Occurrences

question 31

Multiple Choice

Exhibit 5-8
The random variable x is the number of occurrences of an event over an interval of ten minutes. It can be assumed that the probability of an occurrence is the same in any two-time periods of an equal length. It is known that the mean number of occurrences in ten minutes is 5.3.
-Refer to Exhibit 5-8. The probability that there are 8 occurrences in ten minutes is

• A).0241
• B).0771
• C).1126
• D).9107

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Definitions:

Null Hypothesis

A statement of no effect or no difference, used as a starting assumption for statistical significance testing.

Grand Mean

The mean of means, calculated by taking the average of several group means.

Completely Randomized

A design in experiments where all subjects have an equal chance of being assigned to any group or treatment.

Factorial Design

An experimental strategy used to test the effect of two or more variables across multiple levels simultaneously.