Company: Infoedge_Data_Science_8nov
Difficulty: medium
A factory uses two machines, A and B, to produce light bulbs. Machine A produces 60% of the bulbs, and Machine B produces 40%. Historically, 2% of the bulbs from Machine A are defective, and 4% from Machine B are defective. If a randomly selected bulb from the factory is found to be defective, what is the probability it was produced by Machine B?
Let A be an m X n real matrix. Which of the following is true if all eigenvalues of A are positive real numbers?
Which scenario would require the use of a chi-square test?
A biased coin is tossed 4 times. The probability of getting exactly 2 heads is given by which expression, where p is the probability of a head?