In a random sample of 8,400 American nine-year-olds in 2020, 42% of those children said they read for fun "almost every day".

a. [3 points] Find a 95% confidence interval based on this sample. Tell me exactly what you are doing to generate that interval - what numbers are you using, what technology are you using, what function are you using? (You may assume all necessary conditions are met to use the methods discussed in this class this quarter.)

b. [4 points] Interpret that interval in a complete sentence.

c. [1 point] What is the margin of error for the interval you made?