The owner of torpid oaks b& b wanted to know the average distance its guests had traveled. a random sample of 16 guests showed a mean distance of 85 miles with a standard deviation of 32 miles. the 90 percent confidence interval (in miles) for the mean is approximately: a) (71.0,99.0)b) (71.8,98.2)c) (74.3,95.7)d) (68.7,103.2)

Engberg company installs lawn sod in home yards. the company’s most recent monthly contribution format income statement follows: amount percent of sales sales $ 80,000 100% variable expenses 32,000 40% contribution margin 48,000 60% fixed expenses 38,000 net operating income $ 10,000 required: 1. compute the company’s degree of operating leverage. (round your answer to 1 decimal place.) 2. using the degree of operating leverage, estimate the impact on net operating income of a 5% increase in sales. (do not round intermediate calculations.) 3. construct a new contribution format income statement for the company assuming a 5% increase in sales.