Question

A company that manufactures smartphones makes 70% of the phones with a touch screen and 55% of the phones with HD movie capability. 30% of the phones have both a touch screen and HD movie capability. What is the probability that a smartphone chosen at random has either a touch screen or HD movie capability?

Answer 1

P(A or B) = P(A) + P(B) - P(A and B)

Answer 2

0.7 + 0.55 - 0.3

Answer 3

simplify

Answer 4

ok thank you so much!

Answer 5

np :)