Introductory Statistics (2nd Edition)
Introductory Statistics (2nd Edition)
2nd Edition
ISBN: 9780321978271
Author: Robert Gould, Colleen N. Ryan
Publisher: PEARSON
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Concept explainers

Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear re…
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
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Chapter 2, Problem 6SE

Exercise Hours The histogram shows the distribution of self-reported numbers of hours of exercise per week for 50 community college students. This graph uses a right-hand rule: Someone who exercised for exactly 4 hours would be in the third bin, the bin right of 4.

a. According to the histogram, there are two possible values for the maxi-mum number of

hours of exercise. What are they ?

b. How many people exercised 0 or 1 hour (less than 2 hours)?

c. How m any people exercised 10 or more hours?

d . What proportion of people exercised 1 0 or more hours?

Chapter 2, Problem 6SE, Exercise Hours The histogram shows the distribution of self-reported numbers of hours of exercise

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