Answer:
The 98% confidence interval for children deficient in vitamin D is (0.18, 0.22).
Explanation:
The (1 - <em>α</em>)% confidence interval for population proportion <em>p</em> is:
The information provided is:
Compute the critical value of <em>z</em> for 98% confidence interval as follows:
*Use a <em>z</em>-table for the value.
Compute the 98% confidence interval for the population proportion as follows:
Thus, the 98% confidence interval for children deficient in vitamin D is (0.18, 0.22).
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