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

question 6

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 less than 3 occurrences is

• A).0659
• B).0948
• C).1016
• D).1239

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Definitions:

Flynn Effect

The observed rise in average IQ scores over successive generations, attributed to environmental factors such as improved education and nutrition.

Industrialized Countries

Nations that have highly developed industries and infrastructure, often characterized by higher standards of living, technology use, and economic output.

Statistical Artefact

An apparent result or trend in data that does not accurately reflect the true situation, often due to methodological errors or biases.

Heritability of IQ

The proportion of variation in intelligence within a population that can be attributed to genetic factors, often discussed in the context of nature versus nurture debates.