12% of individuals insured by All-Driver Automobile Insurance Company have received at least one...

Question:

12% of individuals insured by All-Driver Automobile Insurance Company have received at least one traffic ticket.

For a sample of 140 insured individuals.

What is the probability that between 8 and 22 of them have received at least one ticket?

Binomial Distribution:

There are certain conditions for a distribution to be binomial which are given as:

  • Number of trials are finite.
  • Only two possibility either success or failure.
  • Events are independent of each other.
  • Probability is constant.

Answer and Explanation:

The population proportion, {eq}p = 0.12 {/eq}

The sample size, {eq}n = 140 {/eq}


We can use binomial distribution or we can use the normal...

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Binomial Distribution: Definition, Formula & Examples

from GMAT Prep: Help and Review

Chapter 4 / Lesson 15
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