Answer: m=-4
Step-by-step explanation: Plug -4 in for m
Answer:
d) The binomial distribution with n = 4 and p = 0.5
Step-by-step explanation:
They re 10 cards consisting of 5 red cards and 5 black cards which are shuffled thoroughly and choosing at random. After choosing the cards are replaced back.
The probability of choosing a red card = number of red cards / total number of cards = 5 / 10 = 0.5
The probability of choosing a black card = number of black cards / total number of cards = 5 / 10 = 0.5
Since after choosing, the cards are replaced back and shuffled making the next draw independent of the previous draw repeated four times. This is a binomial distribution with n = 4 and p = 0.5
You just need to replace the value of x and y in your expression. This gives us :
-12 * 5 - 4 * (-3) + 19 - 3*(-3) = -60 - (-12) + 19 - (-9) = -60 + 12 + 19 + 9 = - 20
Good luck for the next ones
