The Average Natural Gas Bill for a Random Sample of 26

question 8

Multiple Choice

The average natural gas bill for a random sample of 26 homes in the 19808 zip code during the month of March was $305.30 with a sample standard deviation of $46.50. The margin of error for a 98% confidence interval around this sample mean is -----.

• A)$25.20
• B)$22.66
• C)$18.69
• D)$20.15

Comprehend the variance in education processes for gifted and talented students across the U.S.

Gain knowledge about the prevalence and characteristics of autism spectrum disorder.

Discuss the educational strategies for children with special needs, including the concept of inclusion and specialized assistance.

Understand the principles and applications of response to intervention (RTI) in educational settings.

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Definitions:

Variance

A measure of dispersion indicating how far individual values in a dataset are from the mean.

Standard Deviation

A measure of the amount of variation or dispersion of a set of values; a low standard deviation indicates that the values tend to be close to the mean.

Sampling Distribution

The probability distribution of a given statistic based on a random sample.

Chi-square Distribution

A probability distribution commonly used in statistical significance tests.