Question

Please help! Correct answer only!

Cooper and Alice made a list of 7 psychology experiments they want to try at home. Each experiment tackles one specific psychology topic. 5 of the experiments involve cats.


If Cooper and Alice randomly choose 4 experiments to try over the summer, what is the probability that all of them involve cats?


Write your answer as a decimal rounded to four decimal places.

Answer 1

Probability = 0.2603

Explanation:

Consider the steps below;

`Probability of Experiment Involving Cats - 5 / 7,\\Probability That 4 Chosen Experiments Are All Involving Cats - ( 5 / 7 )^4,\\\\5 / 7 * 5 / 7 * 5 / 7 * 5 / 7 =\\\\Conclusion; Probability - 625 / 2401`

Solution; Probability = ( About ) 0.2603