Question

In: Statistics and Probability

1. In a study, 1533 child were questioned on the prevalence of symptoms of severe cold...

1. In a study, 1533 child were questioned on the prevalence of symptoms of severe cold at the age of 12 and then again at the age of 14 years (two years later). At age 12, 306 children were reported to have severe colds in the past 12 months compared to 142 at age 14. The 2×2 table are shows as the following:

Severe colds at age 14

Severe colds at age 12

Yes

No

Total

Yes

306

142

448

No

376

709

1085

Total

682

851

1533

Is there a significant difference of the prevalence of severe cold at the age of 12 and 14?

Please conduct a hypothesis testing for justify your conclusion.

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Expert Solution

orchestra answered 1 year ago
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