Test Hypotheses About a Population Mean with Known Using Confidence $22.4$

question 33

Short Answer

Test Hypotheses about a Population Mean with Known Using Confidence Intervals
-A group of 49 randomly selected construction workers has a mean age of $22.4$ years with a standard deviation of $3.8$ . According to a recent survey, the mean age should be $\mu = 21.9$ years. Test this hypothesis by constructing a $98 \%$ confidence interval for the population mean.

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Definitions:

Atypical Antipsychotic

A class of medication used to treat psychiatric conditions, which generally has fewer side effects than older antipsychotic drugs.

Classical Antipsychotics

A group of medications that are traditionally used to treat symptoms of psychosis such as hallucinations and delusions.

Clozaril

A brand name for clozapine, an antipsychotic medication used primarily to treat severe schizophrenia after other treatments have failed.

Benzodiazepine

Benzodiazepine is a class of psychoactive drugs known for their use in treating anxiety, insomnia, and a range of other conditions, acting as central nervous system depressants.