Skyler goes to a school which has 1000 students in it. she asks 40 random students whether they like the new 8.30am start to the day. 30 of them say "no" they do not like it. use the information to estimate how many students in the whole school dislike the 8.30am start.

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