Question

Listed below are the amounts of mercury (in parts per million, or ppm) found in tuna sushi sampled at different stores. The sample mean is 1.021ppm and the sample standard deviation is 0.298ppm. Use technology to construct a 90% confidence interval estimate of the mean amount of mercury in the population.

1.08 1.41 0.81 0.51 1.21 1.19 0.94

What is the confidence interval estimate of the mean amount of mercury in the population?

__ ppm < u < _ ppm

Answer 1

Here

sample mean

sample standard deviation

and sample size

a 90% confidence interval estimate of the mean amount of mercury in the population

The confidence interval estimate of the mean amount of mercury in the population

= 0.802133 ppm < < 1.23987 ppm