Question

help me solve this problem

Answer 1

probability of choosing someone on main floor = 12/20 and P(buy program) = 0.40
probabiltiy .. .. ... .. .. ....... baconty = 8/20 ..... ........ = 0.50

Answer 2

for each line you multiply the individual probabilities
then add the 2 results

Answer 3

Sorry I#ve copieed those incorrectly

For main floor Probabilities are 12/20 and 0.50 ( or 50%)
balconi is 8/20 and 0.40

Answer 4

OK?

Answer 5

so you have 12/20 * 0.50 = 0.6 * 0.5 for main floor
and 8/20 * 0.40 = 0.40 8 0.40 for balcony

Answer 6

*).40 * 0.40

Answer 7

= 0.30 + 0.16

Answer 8

ok so it would be 46%