question number 5

XwIDUPUUTYLPRyuung Ft C Nhng ... What is the standard deviation? 4.) A.) Using the rule of two standard deviations, if a student randomly guesses, what would be considered an unusually low or unusually high number of correct answers for number 2 (above)? B.) If passing is getting 7 or more answers correct, what is the probability that a student passes when randomly guessing? 5.) An announcement train travelling from New York to Boston could have a delay of up to 10 minutes. If waiting times are uniformly distributed, find the probability of the following: a.) That the train is 5 to 8 minutes late. b.) That the train is more than 8 minutes late. c.) That the train is less than 4 minutes late. Below is a graph of a standard normal distribution with a man of and a standard deviation of SONY