Purchase Solution

# Drawing fuses out of a box

Not what you're looking for?

1. A box contains ten fuses of which 3 are defective. Two fuses are selected at random from the box without replacement. What is the probability that exactly one of the fuses selected is defective?

2. A box contains one hundred fuses of which 30 are defective. Ten fuses are selected at random from the box with replacement. What is the probability that no more than 4 of the fuses selected are defective?

##### Solution Summary

This solution looks at probability problems: drawing defective fuses out of a box.

##### Solution Preview

Problem 1
Since this is a selection without replacement the probabilities of selecting a defective fuse change from the first selection to the second selection (the population from which to choose changes from 10 to 9 for the second selection and the number of defective fuses remaining depends on whether a good or bad fuse was picked the first time).

There are two ways of selecting exactly one defective fuse: [pick one ...

##### Free BrainMass Quizzes

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.

##### 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.