* 7.38 Mercury in Freshwater Fish According to an article from HuffingtonPost.com, some experts believe that 20% of all freshwater fish in the United States have such high levels of mercury that they are dangerous to eat. Suppose a fish market has 250 fish we consider randomly sampled from the population of edible freshwater fish. Use the Central Limit Theorem (and the Empirical Rule) to find the approximate probability that the market will have a propor- tion of fish with dangerously high levels of mercury that is more than two standard errors above 0.20. You can use the Central Limit Theorem because the fish were randomly sampled; the population is more than 10 times 250; and n times p is 50, and n times (1 minus p) is 200, and both are more than 10. 7.46 Is Marriage Becoming Obsolete? When asked whether marriage is becoming obsolete, 782 out of 2004 randomly selected adults who responded to a 2010 Pew Poll said yes. Refer to the out- put given. Assume the conditions for using the CLT were met. a. Report a 95% confidence interval for the proportion. Use correct word- ing (see Exercise 7.45). b. Is it plausible to claim that a majority think marriage is becoming obsolete? NORMAL FLOAT AUTO REAL RADIAN HP 1-PropZInt (. 36886. . 41158) =. 3902195609 n=2004