Question

Number of per month__number of moviegoers

more than 7____________96
5-7_______________ ___180
2-4__________________219
less than 2____________205
total _________________700


Use the frequency table. Find the probability that a person goes to the movies at least 2 times a month. Round to the nearest thousandth.

A. 0.138

B. 0.707

C. 0.137

D. 0.394

sorry for the poor graph up top,,,,:/

Answer 1

Leave out those who went less than twice to get those who went at least twice
pr = (700 - 205)/700 = 0.7071 <-------

So answer is B

Answer 2

B. 0.707

Explanation:

The frequency table is given by,

Number of months Number of movie goers

More than 7 96

5 - 7 180

2 - 4 219

Less than 2 205

Total 700

Since, Probability of an event is the ratio of favorable events to the total number of events.

As, the number of people going to movies atleast 2 times a month = 96 + 180 + 219 = 495

The probability that a person goes to the movies atleast 2 times a month =
`(495)/(700)=0.707`.

Thus, option B is correct.