Question

The probability that it will be at least 70°on Tuesday is 0.65. If it is at least 70°, there is a 0.8 chance that Mrs. Collins will hold her book club outside. If it is not at least 70°, then there is only a 0.1 chance that the book club will be held outside. What is the probability that Mrs. Collins will not hold her book club outside on Tuesday? 0.13 0.445 0.555 0.835

Answer 1

P(> or =70) =0.65
P(Collins inside) =0.80
P(not 70) = 1-P(70) =>0.35
P(Collins inside) = 0.1
Then P(70 AND Collin inside) .65 x .8 =0.52
P( not 70 AND Collin Outside = 0.35 x 0.1=0.035
TOTAL Possibility [(70 AND Inside) OR (not 70 AND Outside):
=0.52 + 0.034 =0.555