On each of three consecutive days the national weather service announces that there is a 50-50 chance of rain. assuming that the national weather service is correct, what is the probability that it rains on at most one of the three days? (hint: represent the outcome that it rains on day 1 and doesn’t rain on days 2 and 3 as rnn.)

1. 50%
2. 33%
3. 37.5%.
4. none of the above.

1. 50%

Step-by-step explanation:

For each day, there are only two possible outcomes. Either it does rain, or it does not, so we use the binomial probability distribution to solve this problem.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

In which is the number of different combinatios of x objects from a set of n elements, given by the following formula.

And p is the probability of X happening.

In this problem we have that:

We want to find

NNN + RNN + NRN + NNR

This is

So

The correct answer is:

1. 50%

it reflected because of the glass maube

step-by-step explanation:

15%

step-by-step explanation:

use the table and count the number of guesses that has two correct answers.

the following are two correct answers

10010, 01100, 11000

a total of 3 numbers having 2 correct guesses out of 20 questions.

probability of getting 2 correct guesses = the number of questions getting 2 correct answers / total number of questions.

= 3/20

to convert it into percent multiply by 100, we get

= 3/20 * 100

= 15%

the answer is 15%

you.