Typo - Chp [tutorial 05], Sec [05-infer-06], [delete one "at"]

[jqzjqz0707]

• Chapter number: tutorial 05

• Section number: 05-infer-06

• Other location identifier, if any (e.g., figure number, table number, footnote number, etc.): under the folder of "t-interval for paired data"

• Original text: Construct a 90% confidence interval for the average difference in prices of the same textbook at at the UCLA bookstore and on Amazon.

• Suggestion for corrected text: Construct a 90% confidence interval for the average difference in prices of the same textbook at the UCLA bookstore and on Amazon.

• Justification for suggestion: delete one "at"