Normal distribution or a t-distribution

Reference no: EM1397119

For the following situation, assume the random variable is normally distributed and use a normal distribution or a t-distribution to construct a 90% confidence interval for the population mean. If convenient, use technology to construct the confidence interval.

a) In a random sample of 10 adults from a nearby county, the mean waste generated per person, per day was 4.58 pounds and the standard deviation was 1.18 pounds.

b) Repeat part (a), assuming the same statistics came from a sample size of 400. Compare the results.

For the sample of 10 adults, the 90% confidence interval is ??

Now assume the sample came from a sample size of 400.

Reference no: EM1397119

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