Question

In a table of random digits such as Table D, each digit is equally likely to be any of $0,1,2,3,4,5,6,7,8,$ or $9$ What is the probability that a digit in the

table is$7$ or greater? (a) $7/10$(c) $4/10$ (e) $1/10$ (b) $6/10$ (d) $3/10$

Short answer

The correct option is (d) 3/10

Step-by-step solution

Step 1. Given Information

There are $275$ pupils in total. There are $20$ vegetarian students in the class.

A total of 9 vegetarian students eat both fish and eggs. A total of $3$ vegetarian students consume eggs but not fish. There are$7$ vegetarian students who eat neither.

Step 2. Concept Used

Formula's used$Probability=\frac{Numberoffavorableoutcomes}{Totalpossibleoutcomes}$

Step 3. Calculation

The table includes the following information: $0,1,2,3,4,5,6,7,8,9$

Probability =Number of favorable outcomes/Total possible outcomes

The sample space is, $S=01,2,3,4,5,6,7,8,9n\left(S\right)=10$

$7$or more people are involved in the event.

The number of favorable results equals $3$

Therefore, Probability =$\frac{3}{10}$