A true/false test has 80 questions. a passing grade is 63% or more correct answers. a. what is the probability that a person will guess correctly on one true/false question? b. what is the probability that a person will guess incorrectly on one question? c. find the approximate probability that a person who is just guessing will pass the test. d. if a similar test were given with multiple-choice questions with four choices for each question, would the approximate probability of passing the test by guessing be higher or lower than the approximate probability of passing the true/false test? why?

An airplane consumes fuel at a constant rate while flying through clear skies, and it consumes fuel at a rate of 64 gallons per minute while flying through rain clouds. let c represent the number of minutes the plane can fly through clear skies and r represent the number of minutes the plane can fly through rain clouds without consuming all of its fuel. 56c+64r < 900056c+64r< 9000 according to the inequality, at what rate does the airplane consume fuel while flying through clear skies, and how much fuel does it have before takeoff? the airplane consumes fuel at a rate of gallons per minute while flying through clear skies, and it has gallons of fuel before takeoff. does the airplane have enough fuel to fly for 60 minutes through clear skies and 90 minutes through rain clouds?

How do you find the distance of each number from the mean

Harold moves no more than 43 of his sheep and goats into another field fewer then 22 of his animals are goats