Examlex
The internal auditing staff of a local lawn-service company performs a sample audit each quarter to estimate the proportion of accounts that are delinquent (more than 90 days overdue) . For this quarter, the auditing staff randomly selected 400 customer accounts and found that 80 of these accounts were delinquent. What is the 95 percent confidence interval for the proportion of all delinquent customer accounts at this company?
Q28: To compute a 95 percent confidence interval
Q28: A normal distribution with mean equal to
Q35: According to data from the state blood
Q86: The binomial random variable x consists of
Q88: For a discrete probability distribution, the value
Q94: A market research study conducted by a
Q96: A fast-food company uses two management-training methods.
Q113: An experiment was conducted to determine the
Q139: The cashier service time at the local
Q144: When p = .5, the binomial distribution