In the town of maplewood a certain type of dvd player is sold at just two stores, 43% of the sales 13) are from store a and 57% of the sales are from store b. 2.4% of the dvd players sold at store a are defective while 4.0% of the dvd players sold at store b are defective. if kate receives one of these dvd players as a gift and finds that it is defective, what is the probability that it came from store a?
a) 0.312
b) 0.453
c) 0.688
d) 0.024

Option A 0.312 is right

Step-by-step explanation:

Given that iN Maplewood a certain type of DVD player is sold at just two stores, 43% of the sales 13) are from store A and 57% of the sales are from store B. 2.4% of the DVD players sold at store A are defective while 4.0% of the DVD players sold at store B are defective.

Prob for any random item form store to be defective = Prob from A and defective +Prob from B and defective

=

Prob it came from A and defective = 0.

If Kate receives one of these DVD players as a gift and finds that it is defective, what is the probability that it came from store A

=

the answer to the question is a

step-by-step explanation:

it has the same slope and the same y-intercept.

y + 11 = -7/9(x - 18)

y + 11 =-7/9x + 14

b

y = -7/9x + 3

y-intercept (0, 3)

1/4 and 8/3 because:

the reciprocal if 4 is 1/4 because 4 is used as 4/1 and the opposite of that is 1/4. the opposite of 3/8 is 8/3 so that is the answer.