(a) Write the claim mathematically and identify H0 and Ha. (b) Find the critical value(s) and identify the rejection region(s). (c) Find the...

3. (a) Write the claim mathematically and identify H0 and Ha. (b) Find the critical value(s) and identify the rejection region(s). (c) Find the standardized test statistic. (d) Decide whether to reject or fail to reject the null hypothesis.

An environmental agency recently claimed more than 30% of consumers have stopped buying a certain product because of environmental concerns. In a random sample of 1040 consumers, you find 35% have stopped buying the product. At alphaα.01, do you have enough evidence to support the claim?