In: Statistics and Probability
For each of the following statements: write the null and alternative hypothesis; state whether the test is left-, right-, or two-tailed, and state what the type I and type II errors would be in the context of the problem. (a) A researcher wants to show that at most, 20% of next year’s wheat crop will be exported to the Soviet Union. (b) A company claims that on average, American homemakers drink 3 cups of coffee per day.