Solve the problem. the systolic blood pressures of the patients at a hospital are normally distributed with a mean of 136mm hg and a standard deviation of 13.8mm hg find the two blood pressures having these properties: the mean is midway between them and 90% of all blood pressures are between them.

Aroulette wheel has 38 slots in which the ball can land. two of the slots are green, 18 are red, and 18 are black. the ball is equally likely to land in any slot. the roulette wheel is going to be spun twice, and the outcomes of the two spins are independent.the probability that it lands one time on red and another time on black in any order is(a) 0.5 (b) 0.25 (c) 0.4488 (d) 0.2244

What is r i 4.5+10r=-6.5 with work pls

Ihonestly have no clue if it's each or none.