A TV news magazine states that the results of their study of the average number of complaints per week about
garbage pick-up in the city had a margin of error of +/- 2.1 at the 95% confidence level based on their
examination of data from a random sample of 30 weeks over the past 3 years. For this statement to be true,
what was the approximate population standard deviation that the organization must have used to compute the
margin of error?

i believe your answer is 99.7% of 7-year-old children are between 46.6 inches and 49.5 inches tall.

step-by-step explanation:

a'(12.5,11.25)

slope=(y1-y2)/(x1-x2)

credit scoring calculations, such as the fico score, look at a few key factors related to your debt. the amount of overall debt you carry, the ratio of your credit card balances to your credit limit (also called credit utilization), and the relation of your loan balances to the original loan amount.