Question

out of 10 student, the favorite drink of 7 is Coke and the favorite drink of of the rest is fanta. a teacher picks a student at random. what is the probability that the favorite drink of the student is (a) Coke (b) fanta (c) neither Coke nor fanta (d) either Coke or fanta​

Answer 1

Answer:

a) 0.7

b) 0.3

c) 0

d) 1

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

(a) Coke

Out of 10, 7. So

$p = \frac{7}{10} = 0.7$

(b) fanta

3 out of 10. So

$p = \frac{3}{10} = 0.3$

(c) neither Coke nor fanta

7 Coke, 3 fanta, so all 10 are either coke or fanta. Thus:

$p = \frac{0}{10} = 0$

(d) either Coke or fanta​

All 10. Thus:

$p = \frac{10}{10} = 1$