A study conducted to assess mercury levels for saltwater fish caught off the course of New Jersey found that a sample of 23 bluefin tuna had mean mercury level of 0.52 ppm, with standard deviation 0.16 ppm. Conduct a two tailed test of hypothesis to test the hypothesis that the mercury levels in New Jersey tuna are not significantly different from 0.50. (Mercury levels at 0.50 ppm or below are deemed safe for consumption). Use ?=0.05

(a)Step 1

Formulate the Null and alternate hypothesis: (use two-sided test)

(b)Step 2: ?=0.05

(c)Step 3 and Step 4:

Minitab> Stat >Basic Statistics >1-sample t> Summarized data>Sample size>23> Sample mean 0.52>Standard deviation>0.16> Select "Perform Hypothesis test> Click Options> Alternative Hypothesis: Mean ?hypothesized mean>OK>OK

One-Sample Proportion X Summarized data Number of events: 120 Number of trials: 250 Perform hypothesis test Hypothesized proportion: Select Options. Help OK Cancel\fOne Sample ProgortionOne-Sample Proportion: Options Confidence level: 95.0 Alternative hypothesis: Fapportion > hypothesized proportion Method Normal apprendimation Help Cancel