A regular sixsided die is rolled once Round your answers to

A regular, six-sided die is rolled once. Round your answers to four decimal places.

a. What is the probability that a number less than 4 is obtained?

b. What is the probability that a number 3 to 6 is obtained?

**Can\'t seem to tell them apart

Solution

A SIX sided die is rolled ={ 1,2,3,4,5,6}

Probability of any number to display = 1/6

a.

P( Number less than 4) = P(X<4) = P(X=1) OR P(X=2) +P(X=3) = 1/6 + 1/6 + 1/6 = 3/6 = 1/2 = 0.5

b.

P( Number 3 to 6 obtaind) = P(X=3) + P(X=4) + P(X=5) + P(X=6) = 1/6+1/6+1/6+1/6 = 4/6 = 2/3 = 0.6667