1. A survey asked 30 tenants in an apartment building how many TV sets they had in their
apartment. Let the random variable X denote the number of televisions per apartment. The
survey results are recorded in the following table:
0
X
Frequency
1
1
6
2
OP(X<3)≈ 0.23
OP(Z <3)0.47
OP(Z <3) 0.67
OP(X <3)=0.70
14
3
7
4 or more
2
If one tenant is selected at random, what is the probability that they have fewer than 3
television sets in their apartment? Round your answer to the hundredths place.