The Number of Traffic Accidents That Occur on a Particular

question 234

Multiple Choice

The number of traffic accidents that occur on a particular stretch of road during a month follows a Poisson distribution with a mean of 8.9. Find the probability of observing exactly four accidents on this stretch of road next month.

• A) 1.296886
• B) 0.035656
• C) 4.788184
• D) 174.158539

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Definitions:

Alternative Hypothesis

A statement that contradicts the null hypothesis and is considered true if the null hypothesis is rejected based on statistical evidence.

Proportions

Fractions or percentages that represent part of a whole or a ratio of one quantity to another.

Proportions

Ratios that compare the part of a whole to the whole itself, often expressed in terms of a fraction or percentage.

Chi-squared Goodness-of-fit Test

A statistical test used to determine whether observed frequencies differ significantly from expected frequencies specified by a theoretical distribution.