A local men\'s clothing store is being sold. The buyers are trying to estimate t

Question

A local men's clothing store is being sold. The buyers are trying to estimate the percentage of items that are outdated. They will choose a random sample from the 100,000 items in the store's inventory in order to determine the proportion of merchandise that is outdated. The current owners have never determined the percentage of outdated merchandise and cannot help the buyers. How large a sample do the buyers need in order to be 90% confident that the margin of error of their estimate is about 2%?

Explanation / Answer

The 90% margin of error is given by
MOE=1.645*(p*(p-1)/n
We want that the margin of error is within 5%

1.645*(p*(p-1)/n<0.02

n>1649.26

so n>1650

n>(because) Therefore, the sample size is.

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.