Solution-Confidence interval for average age of all

Confidence interval for average age of all consumers

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Reference no: EM132488241

1. The makers of a soft drink want to identify the average age of its consumers. A sample of 16 consumers is selected. The average age in the sample was 22.5 years with a standard deviation of 5 years. Assume the population of consumer ages is normally distributed.

a. Construct a 95% confidence interval for the average age of all the consumers.

b. Construct an 80% confidence interval for the average age of all the consumers.

c. Discuss why the 95% and 80% confidence intervals are different.

Reference no: EM132488241

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Confidence interval for average age of all consumers

Reference no: EM132488241

Reference no: EM132488241

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