12
QuizMultiple Choice

Hypothesis Testing — Unit test

Question 12 • CREDIT RE-SEAT MNPS Integrated Math III IC S2 26-27

Glenda checks the computer monitors made at her company for defects. It has been shown that 0.5% of the monitors are defective. She decides to check several monitors and record if they are defective. Which of the following will make this process into a binomial experiment?

Answer
A
Glenda checks the monitors until she has 300 defective monitors.
B
Glenda checks 300 monitors and records the number that are defective until she gets greater than 0.5% defective monitors.
C
Glenda checks the monitors until she has 300 non-defective monitors.
D
Glenda chooses to check 300 monitors.

Explanation

A binomial experiment uses a fixed number of trials, with each trial having two outcomes and the same probability of success. In choice D, Glenda decides in advance to check 300 monitors and records whether each is defective; the probability of a defect is 0.5% for each monitor. The other choices continue checking until a specified number or proportion is reached, so the number of trials is not fixed.

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