Answer: Given a sample of 200, we are 90% confident that the true proportion of people who watched educational TV is between 72.1% and 81.9%.
Step-by-step explanation:
=0.049
0.77±0.049< 0.819, 0.721
Answer: a) -240
<u>Step-by-step explanation:</u>
Answer:8.6 x 104
Step-by-step explanation: