In: Statistics and Probability
The U.S. Postal Service (USPS) has used optical character recognition (OCR) since the mid-1960s. In 1983, USPS began
deploying the technology to major post offices throughout the country (www.britannica.com). Suppose that in a random sample
of 500 handwritten zip code digits, 466 were read correctly.
(b) What sample sample size is needed if we want the 95% confidence interval for the proportion of correct reading to have a margin of
error to 1% or less?
The U.S. Postal service (USPS) has used optical character recognition (OCR) since the mid-1960s. In 1983, USPS began