Question 11 (1 point) A university surveyed recent graduates of the English Department for their starting salaries. 225 graduates returned the survey. The average sample salary was $40,000. The sample standard deviation is $5,000. What is the best point estimate of the population mean? 1) $5,000 2 2) $40,000 3) $22,500 5 4) $40,225 Question 12 (1 point) The weight of trucks traveling on a particular section of 1-45 has a normal distribution with a population mean of 20.0 tons and a population standard deviation of 5.0 tons. What is the probability a state highway inspector could select a sample of 25 trucks and find the sample mean to be 22.0 tons or more? 1) 0.34458 2) 0.02275 3) 0.65542 O4) 0.97725