Number of Per Month Number of Moviegoers More than 7 57 180

Number of Per Month Number of Moviegoers More than 7 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. O 0.137 O 0.707 O 0.138 O 0.394

Solution

Answer 7: 0.707 (As explained below)

Probability that a person goes to the movies at least 2 times in a month = (219 + 180 + 96) / 700 = 495 / 700 = 0.707

Answer 17: 50% (As explained below)

The child will place the left thumb on top naturally as encouraged by its geentic make-up.

In this case, the genetic make-up being dominant for the left thumb in 2 out of the 4 outcomes, the probability of child naturally placing its left thumb on top = 2/4 = 1/2 i.e. 50%.