A Company Manufactures Calculators in Batches of 55 and Claims

question 4

Multiple Choice

A company manufactures calculators in batches of 55 and claims that the rate of defects is 4%. Find the probability of getting exactly 2 defects in a batch of 55 if the rate of defects is 4%. If a store receives a batch of 55 calculators and finds that there are 2 defective calculators, do they have any reason to doubt the company's claimed rate of defects?

• A) 0.0181; Yes. If the rate of defects is really 4%, the probability of finding 2 defects in a batch of 55 calculators is very small.
• B) 0.546; No. If the rate of defects is really 4%, it is not so unlikely to find 2 defects in a batch of 55 calculators.
• C) 0.273; No. If the rate of defects is really 4%, it is not so unlikely to find 2 defects in a batch of 55 calculators.
• D) 0.262; No. If the rate of defects is really 4%, it is not so unlikely to find 2 defects in a batch of 55 calculators.

---

Definitions:

Varying Ages

Refers to a diverse range of ages within a population or group, highlighting differences in stages of life, experiences, and perspectives.

Picture Story Board

A visual tool consisting of illustrations or pictures arranged in sequence to narrate a story or demonstrate a process.

Youngest Son

The term refers to the last-born male child in a family.

Clinical Sign

An objective indication of a medical condition observed by a healthcare professional during a physical examination or diagnostic testing.