Suppose the locations of the cars are not necessarily mu- tually independent. What is the expected total number of cars in either Zone B or C? Explain.

Crash Commercial airplanes have an excellent safetyrecord. Nevertheless, there are crashes occasionally, withthe loss of many lives. In the weeks following a crash,airlines often report a drop in the number of passengers,probably because people are afraid to risk flying.a) A travel agent suggests that since the law of averagesmakes it highly unlikely to have two plane crasheswithin a few weeks of each other, flying soon after acrash is the safest time. What do you think?b) If the airline industry proudly announces that it hasset a new record for the longest period of safe flights,would you be reluctant to fly? Are the airlines due tohave a crash?

Identify in each case if it is a qualitative, continuous quantitative or discrete quantitative variable. a) number of fans in the emergency room of the Medical Centerb) height of the first grade students of the Perpetuo Socorro Schoolc) marital status of the members of the Gran Combo de Puerto Ricod) weight of children confined in the pediatric ward of Presby Hospitale) gallons of milk produced by a cow dailyf) number of children who have five sisters

Suppose that the students just completing freshman year at Galton University have Math SAT scores and first-year GPAS with the following summary statistics according to the registrar's office. Average Math SAT score = 540 SD = 100 Average first-year GPA = 2.6 r = 0.58 SD = 0.8 The scatterplot of their first-year GPAS on Math SAT scores is an oval-shaped cloud of points. Suppose a student from this freshman class at Galton University takes the SAT again during the summer and gets a score 75 points higher than his original score. By how much will his first-year GPA increase?