Confidence interval

Question

Newsweek performed a poll in which 500 American parents were asked the question, “Would you prefer to have your child taught by a male or female for grades K-2?” Only 40% responded that they would prefer to have their child taught by a male in grades K-2. Construct a 95% confidence interval for the poll

Answer 1

Use the 1-PropZInt feature on your TI-84 as follows:

STAT--->TESTS--->1PropZInt

X: enter the proportion of students who wanted to be taught by a male (.4*500=200)

n: enter the sample size (given= 500)

C-Level: enter the confidence provided in the question (C-Level= .95)

Your final answer should be (.35706, 44294)

Let me know if you have any further questions! Good Luck!!