About 32% of all the laptop computers sold in an electronics store have hard disks made by Western Digital, i. e., p=0.32. In a specific shipment, a total of n=15 laptop computers are received. Treat these 15 laptop computers as a random sample and use X to denote the number of them with hard disks made by Western Digital in this sample. Keep at least 4 decimal digits if the result has more decimal digits.

The probability that exactly 2 of the laptop computers have hard disks made by Western Digital is closest to.

a. 0.0031
b. 0.0217
c. 0.0715
d. 0.0962
e. 0.9752

costs the what? what is the cost of the pants?

step-by-step explanation:

if it is $10, then the price is 14.

take 40% of the cost, and then add the cost.

40% of 10 = 4

4+10 = 14.

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional

25/6

step-by-step explanation:

you multiply 4 by the denominator (4*6=24) and add it to the numerator which makes it 25/6.