Refer to Problem 18 5 What is the probability that a
Refer to Problem 18 5 What is the probability that a
Refer to Problem 18.5. What is the probability that a troop reading at the fifth-grade level will pass the mechanics’ exam? To be 80% sure that 75% of the mechanics pass the exam, what would the reading level need to be raised to? Comment on the validity of the mechanics’ exam.