6th Edition

ISBN: 9781319113339

Author: Starnes

Publisher: MAC HIGHER

Concept explainers

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

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Question

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

Chapter 8, Problem T8.3SPT

To determine

To explain: The circumstances under which it would not be safe to construct the construct the confidence interval on the sample size of 14.

Expert Solution & Answer

Answer to Problem T8.3SPT

In case of box plot situation.

Explanation of Solution

Given:

Sample size ( n ) = 14

Confidence interval using t-distribution is to be constructed.

The confidence interval using t distribution is computed when the sample size is less than 30 and the sample standard deviation is known. And, it is used when the data is normally distributed. A box plot that depicts the values below the median and above the median would be inappropriate to construct the confidence interval because it would be showing some variability in the data set.

Thus, it could be said that would not be safe to construct the construct the confidence interval on the sample size of 14 under the circumstance of box plot.

Hence, the correct option is (c).

Chapter 8, Problem T8.2SPT

Chapter 8, Problem T8.4SPT

Chapter 8 Solutions

PRACTICE OF STATISTICS F/AP EXAM

Ch. 8.1 - Prob. 1E Ch. 8.1 - Prob. 2E Ch. 8.1 - Prob. 3E Ch. 8.1 - Prob. 4E Ch. 8.1 - Prob. 5E Ch. 8.1 - Prob. 6E Ch. 8.1 - Prob. 7E Ch. 8.1 - Prob. 8E Ch. 8.1 - Prob. 9E Ch. 8.1 - Prob. 10E

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