Purchase Solution

Statistics - Probabilities of driving a car at a given age

Not what you're looking for?

Ask Custom Question

If 80% of all people between the ages of 30 and 50 drive a car, find these probabilities for a sample of 20 people in that age group:

a. Exactly 18 drive a car.
b. 16 or more drive a car.
c. At most 15 drive a car.

Purchase this Solution
Solution Summary

Provides steps necessary to determine the probability.

Solution Preview

p = 0.8, q = 1 - p = 0.2, n = 20

The binomial formula is P(r) = C(n, r) p^r q^(n - ...

Purchase this Solution
Free BrainMass Quizzes
Measures of Central Tendency

Tests knowledge of the three main measures of central tendency, including some simple calculation questions.

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.

Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.

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.

View More Free Quizzes
Related BrainMass Solutions

  • New Mexico DWI Pathology

    The following chart provides the statistics for the number of deaths related to teen age driving while intoxicated or under the influence for the years 2004 through 2008 - the most recent statistics available.

  • Analysis: driving under influence

    Given the incidence of auto-accident deaths among teenagers despite the higher drinking age, you have to ask whether the powerful lobby Mothers Against Drunk Driving simply targeted the wrong D.

  • Probabilities in real life

    For instance, when we get into a car and start driving to work or school or elsewhere, we know that there is always the possibility to have an accident with various unwelcome consequences.

  • Statistics Probability Problem

    Construct a contingency table or a Venn Diagram to evaluate the probabilities of a warranty related repair: What is the probability that a new car selected at random: a. Needs warranty repair b.

  • Can the government require citizens to wear seatbelts?

    Both life and pursuit of happiness are improved by ensuring that citizens don't die in car crashes. Statistics have shown that wearing a seat belt greatly improves ones chances of surviving a car crash.

  • Probability and Measure of Central Tendency problems

    Last year, nine employees of an electronics company retired. Their ages at retirement are listed below. Find the mean retirement age. 2. A store manager kept track of the number of newspapers sold each week over a seven-week period.

  • Descriptive Statistics & Probability Calculations

    Last year, nine employees of an electronics company retired. Their ages at retirement are listed below. Find the mean retirement age. 57 62 62 55 66 58 65 50 50 2.

  • Statistics Contingency table and decision tree

    For instance, the following contingency table shows color preference as a function of age (the data are hypothetical). The entries show the number of subjects at each age level choosing a particular car color as their favorite.

  • Probability

    What is the probability that the average age of these 40 airplanes is at least 14 years old?

  • Random Sample - Test Claim

    135546 Random Sample - Test Claim A random sample of 160 car crashes are selected and categorized by age. The are listed below. The age distribution of for the given categories is 18% for under 26, 39% for 26-45, 31% for 46-65, and 12% for over 65.

View More Related Solutions