Question

The probability of choosing a 6 at random from a standard deck of playing cars is 1/13.Use this information for 1 and 3.

1. what is the complement of the event of choosing a 6 ?

2. What is the probability of the complement of the event of choosing a 6 ?

3. You roll a standard number cube 1,000 times. Predict the number of times you will roll a 2 or a 5.

Answer 1

1.
What is 1 - 1/13 ?

2. .......

3.
to get a 2 ---> 11
to get a 5 ---> 14, 41, 23, 32 or 4 ways
so to get a 2 or 5 ----> 5 possible outcomes

prob(2 or 5) = 5/36
so in 1000 tosses we expect
(5/36)(1000) or appr 139 times

Answer 2

I don't know what is the question between 1 and 2 , the question 2 has probability (what is that mean)

Answer 3

1. did you mean 1 - 1/13= 12/13