What is the average mercury level of fish (Large Mouth Bass) in Florida lakes?

Apply the Central Limit Theorem OR create a sampling distribution by running at least 6000 samples in StatKey.

Average Mercury ppm

0.04	0.04	0.05	0.1	0.15	0.16	0.17	0.18	0.19	0.19
0.19	0.21	0.25	0.27	0.27	0.27	0.28	0.34	0.34	0.34
0.34	0.4	0.41	0.43	0.44	0.48	0.48	0.49	0.49	0.5
0.5	0.52	0.56	0.56	0.59	0.63	0.65	0.71	0.73	0.77
0.81	0.83	0.84	0.86	0.87	0.94	0.98	1.08	1.1	1.16
1.2	1.23	1.33

Sample Statistics

$\displaystyle {n}$	$\displaystyle \overline{{x}}$	$\displaystyle {s}$
53	0.52717	0.34104

The data is also available at StatKey, select CI for Single Mean, Median, St.Dev., then change the data set to Florida Lakes (Mercury in Fish).

Find a 90% confidence interval for the average parts per million of Mercury in fish in Florida lakes. $\displaystyle {\left({z}_{{\alpha/{2}}}={z}_{{0.05}}\approx{1.64485}\right)}$

1. Point estimate for the mean =
2. Error Bound on the Mean =
3. Confidence Interval =
4. Draw (by hand) a picture of this to submit to your instructor or test proctor, or upload your sketch here.
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