Acompany estimates that 0.1% of their products will fail after the original warranty period but within 2 years of the purchase, with a replacement cost of $500.

if they offer a 2 year extended warranty for $36, what is the company's expected value of each warranty sold?

$35.5

Step-by-step explanation:

The outcomes are:

$36 [warranty cost]

and

-(500 - 36) = -$464 [replacement cost - warranty cost]

The probabilities are:

1 - 0.001 = 0.999 [ for the first ]

and

0.001 [for the second possibility]

Thus, the company's expected value for each warranty sold is:

36(0.999) + (-464)(0.001) = $35.5

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

on monday rodney ate 1/4th of the sandwich = 3/12

on tuesday he ate 1/3rd of the sandwich = 4/12

therefore in total he has eaten = 3/12 + 4/12 = 7/12

thus we can say that he has eaten 7/12 of the sandwich on monday and tuesday alltogether.

happy to

pls mark as brainliest.