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VitaminD, whether ingested as a dietary supplement or produced naturally when sunlight falls upon theskin, is essential forstrong, healthy bones. The bone disease rickets was

VitaminD, whether ingested as a dietary supplement or produced naturally when sunlight falls upon theskin, is essential forstrong, healthy bones. The bone disease rickets was largely eliminated during the1950s, but now there is concern that a generation of children more likely to watch TV or play computer games than spend time outdoors is at increased risk. A recent study of 3200 children randomly selected found 23% of them deficient in vitamin D. Complete parts a through c below.

a) Construct a98% confidence interval for the true proportion of children who are deficient in vitamin D. Select the correct choice below and fill in any answer boxes within your choice.

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