Question

The table below shows the three-day rain forecast

Answer 1

Answer:

a=0.343

Step-by-step explanation:

70/100=0.7

0.7x0.7x0.7=0.343

Answer 2

Answer:

Step-by-step explanation:

Given is the table which shows the three day rain forecase.

Day Probability of rain

Friday           70%

Saturday      70%

Sunday          70%

Since each day rain is independent we get

a) Probability  that it will rain on all three days = $(0.7)^3 =0.343$

b)  probability that it will rain on exactly two consecutive days

= probability that it rains either Fri, SAt or Sat, Sun or Sun, Fri

$=3C2 (0.7)^2 (0.3)$

=0.441