Purchase Solution

Binomial Probabilities and Binomial Random Variables

Not what you're looking for?

Ask Custom Question

1. Suppose we want to determine the (binomial) probability (p) of getting 8 heads in 10 flips of a 2-sided coin. Using the binomial probability table in the appendix of the text, what values of n, v, and p would we use to look up this probability and what would be the probability?

2. If x is a binomial random variable, use the binomial table to determine the probability of x for each of the following:
a. n=10, x=8, p=0.3
b. n=8, x=7, p=0.95

3. A candy company claims that 11% of its plain candies are orange and a sample of 200 such candies are randomly selected. Find the mean and standard deviation for the number of orange candies in such groups of 200.

4. If we consider an experiment of generating 196 births and recording the genders of the babies, the mean number of girls is 98 and the standard deviation is 7 girls. Would it be unusual to get 110 girls in 196 births? Why or why not?

5. Determine whether the following probability experiment represents a binomial experiment and explain the reason for the answer.

*An experimental drug is administered to 80 randomly selected individuals with the number of individuals responding favorably recorded.

Purchase this Solution

Solution Summary

The solution gives detailed guide to some binomial distribution questions . I provide both answers and explanations.

Solution Preview

1. Suppose we want to determine the (binomial) probability (p) of getting 8 heads in 10 flips of a 2-sided coin. Using the Binomial probability table in the appendix of the text. What values of n, v, and p would we use to look up this probability and what would be the probability?
n=10 v=8 p=0.5

2. If x is a binomial random variable, use the binomial table to determine the probability of x for each of the following:
a. n=10, x=8, p=0.3 ...

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.

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.

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.