Question

A total of 21 mice are chosen for a research experiment, Of them 15 are female and the rest are male . They are held in a 20 gallon tank. If the researcher doesn't know the genderof any and pucks one up at randomfrom inside the tank,what is the probability that yhe researcher chooses a male mouse? Convert the fraction to a decimal. Round to three decimal places

Answer 1

Answer : 0.286

The total number of mice = 21

The number of female mice = 15

Therefore, the number of male mice = 21 - 15

The number of male mice = 6

Number of male mice = 6

The number of female mice = 15

Probability = possible outcomes / total outcomes

Possible outcomes = 6

Total outcomes = 21

Probability = 6/ 21

Probability = 0.286