A recent survey of 70 polygraph tests of trustworthy FBI agents resulted in 6 false positives (tests in which an individual fails even though he or she is telling the truth). Assigned as Homework LP 19 and 20 WS Question 1 TWO POINTS Can the normal approximation method be used to construct a confidence interval for p, the proportion of all polygraph tests that result in false positives? Explain. (Your explanation should involve a calculation to "check" to make sure the normal approximation method can be used to construct a confidence interval for the population proportion of all polygraph tests that result in false positives.)