# Question: The county finance department in Exercise 7 90 also wants information

The county finance department in Exercise 7.90 also wants information about renewals of disabled parking placards. Suppose that in a sample of 350 transactions for disabled parking placards, it was found that 250 were paid electronically.

a. What is the margin of error for a 99% confidence interval estimate of the population proportion of disabled renewal transactions paid electronically?

b. Without calculating, is the margin of error for a 95% confidence interval estimate of the population proportion of disabled renewal transactions paid electronically larger, smaller, or the same as that found in part a for a 99% confidence interval?

a. What is the margin of error for a 99% confidence interval estimate of the population proportion of disabled renewal transactions paid electronically?

b. Without calculating, is the margin of error for a 95% confidence interval estimate of the population proportion of disabled renewal transactions paid electronically larger, smaller, or the same as that found in part a for a 99% confidence interval?

**View Solution:**## Answer to relevant Questions

What is the typical age of a person who renews his or her driver’s license online? From a random sample of 460 driver’s license renewal transactions, the mean age was 42.6 and the standard deviation was 5.4. Compute the ...The president’s policy on domestic affairs received a 45% approval rating in a recent poll. The margin of error was given as 0.035. What sample size was used for this poll if we assume a 95% confidence level? Recent business graduates currently employed in full-time positions were surveyed. Family backgrounds were self-classified as relatively high or low socioeconomic status. For a random sample of 16 high-socioeconomic-status ...Would you use the library more if the hours were extended? From a random sample of 138 freshmen, 80 indicated that they would use the school’s library more if the hours were extended. In an independent random sample of 96 ...Is the average amount spent on textbooks per semester by accounting majors significantly different from the average amount spent on textbooks per semester by management majors? Answer this question with a 90% confidence ...Post your question