Construct confidence level with a standard deviation

Reference no: EM13146411

A common problem in inferential statistics is constructing a confidence interval. The makers of a soft drink want to identify the average age of its consumers. A sample of 16 consumers is taken. The average age in the sample was 22.5 years with a standard deviation of 5 years.

1. Construct a 95% confidence level.
2. Now do the same thing with 80% confidence level.

Reference no: EM13146411

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