Some experts believe that 24% of al freshwater fish in a country have such high

Question

Some experts believe that 24% of al freshwater fish in a country have such high levels of mercury that they are dangerous to eat. Suppose a fish market has 300 fish tested, and 82 of them have dangerous le els of mercury Test the hypothesis thar this sample is not from a population with 24% dangerous fish, assuming that this is a random sample. Use a significance level of 0.05. Comment on your concusion. State the null and alternative hypotheses A Ho:P 024 H:p 0.24 B. Ho' p> 0.24 H:p 0.24 Ha:P 0.24 . Ho:P:024 Hap-0.24 H:p 024 Detemine the z-est statiatic. zRound to two decimal places as needed.)

Explanation / Answer

The statistical software output for this problem is:

One sample proportion summary hypothesis test:
p : Proportion of successes
H0 : p = 0.24
HA : p 0.24

Hypothesis test results:

Hence,

z = 1.35

Proportion Count Total Sample Prop. Std. Err. Z-Stat P-value p 82 300 0.27333333 0.024657656 1.3518452 0.1764

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