The following table shows the probability distribution for a discrete random variable.
X
12
15
17
20
22
24
25
30
P(X| 0.07 0.21
0.17 0.25 0.05 0.04 0.13 0.08
The mean of the discrete random variable X is 19.59. What is the variance
of X? Round your answer to the nearest hundredth.
A. 23.18
O B. 26.55
C. 34.71
D. 31.06
SUBMIT

Someone answer this asap rn for ! a discount store’s prices are 25% lower than department store prices. the function c(x) = 0.75x can be used to determine the cost c, in dollars, of an item, where x is the department store price, in dollars. if the item has not sold in one month, the discount store takes an additional 20% off the discounted price and an additional $5 off the total purchase. the function d(y) = 0.80y - 5 can be used to find d, the cost, in dollars, of an item that has not been sold for a month, where y is the discount store price, in dollars. create a function d(c(x)) that represents the final price of an item when a costumer buys an item that has been in the discount store for a month. d(c(x)) =