A sample of 4 different calculators is randomly selected from a group containing 35 that are defective and 27 that have no defects. What is the probability that all four of the calculators selected
Are defective?
A)0.3541
B)2.9835
C)0.0939
D)0.1016

Question

Quizplus · Accepted Answer

The probability of selecting 4 defective calculators out of a total of 62 (35 defective + 27 non-defective) is calculated using combinations. The probability is $\frac{{\binom{35}{4}}}{{\binom{62}{4}}}$, which simplifies to approximately 0.0939.

A Sample of 4 Different Calculators Is Randomly Selected from a Group