E Homework: h9 HW One Sample Confidence Intervals

Question 8, 9.1.39 O Homework: Ch9 HW One Sample Confidence Intervals Par-t20f3 A television sports commentator wants to estimate the proportion ot citizens who "follow professional football." Complete parts (a) through (c). Click here to view the standard normal distribution table (Qage_l)_ Click here to view the standard normal distribution table (Qage_2L (a) What sample size should be obtained it ne wants to be within 2 percentage points with 95% confidence it ne uses an estimate ot 52% obtained from a poll? The sample size is 2398 . (Round up to the nearest integer.) (b) What sample size should be obtained it ne wants to be within 2 percentage points with 95% confidence it ne does not use any prior estimates? The sample size is (Round up to the nearest integer.) O HW Score: 51.04%, 12.25 of24 points O Points: 0.33 of 1