Kindly highlight answers: -with very brief explanation.

PART A

A hospital is trying to cut down on emergenqa room wait times. It is interested in the amount of time patients must wait before being called back to be examined. An investigation committee randomly surveyed 70 patients. The sample mean was 1.5 hours with a sample standard deviation of 0.5 hours. Explain in complete sentences what the 95% condence interval for the population mean time spent waiting means. 0 There is a 95% chance that a patient's wait time lies within this interval. Q We are 95% condent that the mean time of the sample of 70 patients wait time lies within this interval. 0 We are 95% condent that the true population mean time of all patient wait times lies within this interval. 0 we are 95% condent that a patient's wait time lies within this interval. The life of Sunshine CD players is normally distributed with a mean of 4.1 years and a standard deviation of 1.3 years. A CD player is guaranteed for three years. We are interested in the length of time a CD player lasts. Find the probability that a CD player will last between 2.8 and five years. (a) Sketch the situation. Label and scale the axes. Shade the region corresponding to the probability. 28. 54. 2. 8 4.1 5. 4 6. 7 (b) Give the proba bility statement and the probability. (Enter exact numbers as integers' fractions, or decimals for the probability statement, Round the probability to four decimal places.) P(| |