Question

Three coins are tossed simultaneously 100 times with the following frequencies of different outcomes. No. of tails are 0 1 2 3 and frequencies are 25 30 22 23 Find the probability of getting exactly 1 tail is

Answer 1

Answer:

0.3

Step-by-step explanation:

Probability= No.of possible answers/ Total no. of answers

:. Probability = No. of times 1 tail came up/ Total no. of tosses

                    = 30/100

Simplifying it, Probability= 0.3

Answer 2

Answer:

9\20

Step-by-step explanation:Given, three coins are tossed simultaneously 100 times with the following frequencies of different outcomes.

No. of tails     Frequency

0                       25

1                       30

2                       22

3                       23

P(at least 2 tails) = P(2 tail) + P(3 tail)

                           = 22/100 + 23/100

                           = (22 + 23)/100

                           = 45/100

                           = 9/20