Your required posts regard the following scenario: assume that you work in a market research department. You are asked to write a report about a claim that 47% of all new car buyers prefer a four-door car. For your first post, discuss how you could use a random sample to test this hypothesis. State the null and alternate hypothesis using the proper notation. State the formula for calculating the standardized sample test statistic, z. How will you decide if you should reject or accept the null hypothesis?