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A researcher is interested in travel time to work. A subgroup of employees are interviewed. Their mean travel time to work is 46 minutes. The mean time of 46 minutes is an example of a O parameter Q statistic H0: u 50 An engine parts manufacturer has agreed to a sampling process to determine the number of parts with a defect. The manufacturer has guaranteed its customer that a container of 1,000 will contain NO MORE THAN 50 defective parts, or the manufacturer pay a hefty penalty. Assume a population standard deviation of 15 defects per container. An independent rm conducts quality control, and that rm obtained a random sample of 49 containers. Every part in the sample of containers was subjected to testing, and an average of 55 defects per container were found. Using a one-tailed test and a signicance level of .01 (or 1%), can the null hypothesis be rejected? 0 a) The Null Hypothesis is Rejected O b) The Null Hypothesis is NOT Rejected O c) There isn't enough information to decide. Suppose you estimate a simple regression where the dependent variable is the miles per gallon (MPG) and the weight of the car (POUNDS) is the only independent variable. You obtain the following regression equation using MS Excel: MPG = 46 - 0.0065 * WEIGHT What is the estimated MPG for a vehicle weighing 3,240 pounds? (Round your final answer to the first place to the right of the decimal, e.g., 23.4) Your