How many people in a car? a study of rush-hour traffic in san francisco counts the number of people in each car entering a freeway at a suburban interchange. suppose that this count has mean 1.5 and standard deviation 0.75 in the population of all cars that enter at this interchange during rush hours. (a) could the exact distribution of the count be normal? why or why not? (b) traffic engineers estimate that the capacity of the interchange is 700 cars per hour. find the probability that 700 randomly selected cars at this freeway entrance will carry more than 1075 people. show your work. (hint: restate this event in terms of the mean number of people per car.)

Describe how fraction strips can you order fractions

Asays "we are both knaves" and b says nothing. exercises 24–31 relate to inhabitants of an island on which there are three kinds of people: knights who always tell the truth, knaves who always lie, and spies (called normals by smullyan [sm78]) who can either lie or tell the truth. you encounter three people, a, b, and c. you know one of these people is a knight, one is a knave, and one is a spy. each of the three people knows the type of person each of other two is. for each of these situations, if possible, determine whether there is a unique solution and determine who the knave, knight, and spy are. when there is no unique solution, list all possible solutions or state that there are no solutions. 24. a says "c is the knave," b says, "a is the knight," and c says "i am the spy."

Which questions would most a reader identify the author's purpose for writing? check all that apply. what type of text is this? what type of reviews did the book receive? how many copies of the book have been sold? what is the central idea? how does this text make one feel?