1.In a study, 1,319 children at the age of 12 were randomly selected to be questioned...

1.In a study, 1,319 children at the age of 12 were randomly selected to be questioned on the

prevalence of symptoms of severe cold. A second sample of 1,319 children at age 14

were random selected to be questioned on the prevalence of symptoms of severe cold.

Among the 12 year olds, 356 children were reported to having severe cold symptoms in

the past 12 months, while among the 14 year olds, 468 reported to having severe cold

symptoms in the past 12 months. Is there a significant difference of the prevalence of

severe cold symptoms between children at the age of 12 and 14?

a)Please conduct a hypothesis testing using the Z test to answer this question.

b)Please conduct a hypothesis testing using the Chi-square test to answer this que

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Expert Solution

orchestra answered 1 year ago

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