A random sample of 100 children with working mothers showed that they were absent from schoool an average of 6 days per term with a standard deviation of 1.6 days. Provide a 98% confidence interval for the average number of days absent per term for all the children.
a. Write down the equation you should use to construct the confidence interval for the average number of days absent per term for all the children.
b. Determine a 98% confidence interval estimate for the average number of days absent per term for all the children.
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