1. At one mid-sized company, most employees make around $45,000 a year. There are a few managers who make around $80,000 a year and two executives who make $120,000 and $250,000 a year, respectively. Which of the following best describes the distirbution of salaries at this company? C Skewed to the left Symmetrical Skewed to the right 2. The heights of 4 year old boys are normally distributed with a mean of 40 inches and a standard deviation of 1.5 inches. Applying the Empirical Rule, the middle 95% of 4 year old boys' heights will fall between C 34 and 46 inches. 35.5 and 44.5 inches. 37 and 43 inches. 38.5 and 41.5 inches. 3. Research question: Are less than 80% of the residents of Las Vegas of legal drinking age? Should you conduct a hypothesis test for a mean or a proportion? C Hypothesis test for a proportion Hypothesis test for a mean 4. Research question: Do more than two-thirds of all World Campus students use Chrome as their primary browser? What procedure should be used to address this research question? C Hypothesis test for a single mean C Hypothesis test for a single proportion Hypothesis test for the difference in two means C Hypothesis test for the difference in two proportions