Asked by Esmer Çetin on Jun 24, 2024
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A random sample of 81 children with working mothers showed that they were absent from school an average of 6 days per term with a standard deviation of 1.8 days.Provide a 95% confidence interval for the average number of days absent per term for all the children in the school.
Confidence Interval
A collection of estimations, from sample-derived statistics, considered to likely house the unrevealed value of a population parameter.
Standard Deviation
A measure of the amount of variation or dispersion of a set of values, represented as the square root of the variance.
- Build confidence ranges for the averages of populations when the population standard deviations are known or unspecified.
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Learning Objectives
- Build confidence ranges for the averages of populations when the population standard deviations are known or unspecified.