MENU


P(no rain)

Probability theory and statistics
Post a reply

P(no rain)

Postby nycmath » Thu Oct 01, 2026 9:15 pm

The forecast calls for a 30% chance of rain on Saturday and a 5% chance of rain on Sunday. What is the probability of no rain consecutively (no rain on Saturday and Sunday)?
nycmath
 
Posts: 1611
Joined: Mon Aug 10, 2026 10:40 pm
Reputation: 61
Top

Re: P(no rain)

Postby Eigenvalue » Fri Oct 02, 2026 1:34 am

Rain on Saturday and Sunday are mutually exclusive events
P( no rain on Saturday and Sunday)
=P(no rain on Saturday)*P(no rain on Sunday)
=(1-0.3)(1-0.05)
=0.7(0.95)
=0.665

66.5%

Eigenvalue
 
Posts: 860
Joined: Mon Aug 10, 2026 10:38 pm
Reputation: 332
Top

Re: P(no rain)

Postby nycmath » Fri Oct 02, 2026 12:35 pm

Eigenvalue wrote:Rain on Saturday and Sunday are mutually exclusive events
P( no rain on Saturday and Sunday)
=P(no rain on Saturday)*P(no rain on Sunday)
=(1-0.3)(1-0.05)
=0.7(0.95)
=0.665

66.5%


Very good.

nycmath
 
Posts: 1611
Joined: Mon Aug 10, 2026 10:40 pm
Reputation: 61
Top
Post a reply

Return to Probabilities and Statistics



Who is online

Users browsing this forum: No registered users and 1 guest