A machine produces components whose masses are normally distributed with a mean and standard deviation of u and o respectively. If 10.2% of the components have a mass greater than 87g and 2.94% have a mass less than 83.5g Determine the: (i) (ii) (i) mean u standard deviation 0. Probability of components with mass between 84.5 g and 86.1 g (8 marks)

Abag contains 3 red marbles, 2 blue marbles, and 2 green marbles. one marble is picked, then another marble. assume that the selections are made with replacement. a) find the probability of picking two red marbles with replacement. b) find the probability of picking a red marble and a blue marble. assume the selections are made without replacement. c) find the probability of picking two red marbles without replacement. d) find the probability of picking a red marble and a blue marble without replacement.