Question

A survey of 9,000 customers at Ron’s grocery store showed that 35% (3,150 customers) would buy Grainy-Os cereal. In the first month, 4,200 out of the 9,000 customers bought the cereal. What was the percent error in the survey estimate of the number of people buying Grainy-Os?

Answer 1

it is 25%, sorry if i'm incorect and sorry for my spelling (im disabled)

Explanation:

Answer 2

The percent error in the survey is 25%

Explanation:

- Percent error is the difference between an approximated value and

exact value, divided by the exact value, multiplied by 100%

- Percent of error is a positive value

- error% = [I approximated value - exact value I ÷ exact value] × 100%

- A survey of 9,000 customers at Ron’s grocery store showed that

35% (3,150 customers) would buy Grainy-Os cereal

- In the first month, 4,200 out of the 9,000 customers bought the cereal

∴ The approximated value is 3150

∴ The exact value is 4200

∴ The percent of error =
`(3150-4200)/(4200)` × 100%

∴ The percent of error = I-0.25I × 100% = 25%

* The percent error in the survey is 25%