Select all of the assumptions required when performing a hypothesis test for a mean. There may be more than one correct answer. A. heteroskedasticity B. independence (sample size < 10% of population + random sample) C. dependent observations D. observations must be normally distributed E. linearity F. no extreme skew or outliers G. normally distributed residuals H. observations should come from a symmetric distribution I. equal or constant variance

Select all of the assumptions required when performing a hypothesis test for a mean. There may be more than one correct answer. A. heteroskedasticity B. independence (sample size < 10% of population + random sample) C. dependent observations D. observations must be normally distributed E. linearity F. no extreme skew or outliers G. normally distributed residuals H. observations should come from a symmetric distribution I. equal or constant variance

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.4: Distributions Of Data

Problem 19PFA

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Question

Select all of the assumptions required when performing a hypothesis test for a mean. There may be more than one correct answer.
A. heteroskedasticity
B. independence (sample size < 10% of population + random sample)
C. dependent observations
D. observations must be normally distributed
E. linearity
F. no extreme skew or outliers
G. normally distributed residuals
H. observations should come from a symmetric distribution
I. equal or constant variance
J. 10+ observed successes and failures
K. 10+ expected successes and failures
L. must have > 30 observations
M. None of the above

Definition Definition Number of subjects or observations included in a study. A large sample size typically provides more reliable results and better representation of the population. As sample size and width of confidence interval are inversely related, if the sample size is increased, the width of the confidence interval decreases.

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