If it rains tomorrow, the probability is 0.6 that john will practice his cello. if it does not rain tomorrow, there is only a 0.4 chance that john will practice. suppose the chance of rain tomorrow is 70%.
what is the probability that john will practice his cello?

The final probability is the weighted average of the playing probabilities calculated over the possible weather options:

P(john practices cello; given that it rains) * P(it rains) +

P(john practices cello; given that it does not rain) * P(it does not rain) =

0.6 * 0.7 + 0.4 * 0.3 = 0.54

The probability is 54%

it 2

step-by-step explanation:

8^1/3=2

i believe the answer is the polygon, heptagon.