Three Out of Ten Motorcyclists Wear Safety Helmets $\frac { 1 } { 10 }$

question 194

Multiple Choice

Three out of ten motorcyclists wear safety helmets. If two motorcyclists are chosen, what is the probability that both wear a safety helmet?

• A) \(\frac { 1 } { 10 }\)
• B) \(\frac { 9 } { 80 }\)
• C) \(\frac { 1 } { 70 }\)
• D) \(\frac { 9 } { 100 }\)
• E) \(\frac { 9 } { 70 }\)

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Definitions:

Logistic Regression

A statistical method used for predicting the outcome of a binary variable based on one or more predictor variables.

Probability

The probability of an event happening.

Success

The accomplishment of an aim or purpose.

Prediction Interval

A range of values that estimates where future observations will fall, with a specified probability.