The Answer to Probability Questions.
Not what you're looking for?
1. A certain airplane has 2 independent alternators to provide electrical power. The probability that a given alternator will fail on a 1 hour flight is 0.02 . Please show work so that I can understand for future problems.
Probability: a) both will fail?
b) neither will fail?
c) one or the other will fail?
2. Probability is 1 in 4,000,000 that a single auto trip will result in a fatality. over a lifetime an average driver takes 50,000 trips.
a) What is probability of fatal accident over a lifetime? (independent events)
b) Why might the assumption of independence be violated?
c) Why might a driver be tempted Not to use a seat belt "just for this trip?
Purchase this Solution
Solution Summary
The probability that a single auto trip will result in a fatality is determined. The solution computes the probability that a given alternator will fail.
Solution Preview
1. A certain airplane has 2 independent alternators to provide electrical power. The probability that a given alternator will fail on a 1 hour flight is 0.02 . Please show work so that I can understand for future problems.
Probability: a) both will fail?
We know that the probability that one will fail is 0.02. The two alternators are independent of one another. The probability that both will fail is found by multiplying the individual probabilities together:
(0.02)(0.02) = ...
Purchase this Solution
Free BrainMass Quizzes
Terms and Definitions for Statistics
This quiz covers basic terms and definitions of statistics.
Know Your Statistical Concepts
Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.
Measures of Central Tendency
Tests knowledge of the three main measures of central tendency, including some simple calculation questions.
Measures of Central Tendency
This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.