Answered: A simple random sample of size n is…

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 8CR

See similar textbooks

Related questions

Question

100%

A simple random sample of size n is drawn from a population that is normally distributed. The sample mean is found to be 108 and the sample standard deviation is found to be 10 A) Construct an 80% confidence interval if the sample size is 13 B) Construct a 70% confidence interval if the sample size is 17 C) Could we have computed the confidence intervals in parts a and b if the population had not been normally distributed

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.

Expert Solution