6 Safari File Edit View History Bookmarks Window Help H ctc.blackboard.com a mutant Ashley Mashia tlLEEE My Institution Courses Organizations and Tutoring Tech Support ' ' TEXAS Distance 1'. cation ~ 13/25 QUESTION 23 > 1 POINT OL-Elementary Statistical Methods-06/21l21 MATH1342.20210621.625437 Knewton Coursework (Homework, Quizzes, and Exams) Unit 2 Exam covering chapters 4 6 7 and 8 The typing speeds of professional typists are normally distributed with a population standard deviation of4 characters and an unknown population mean. A random sample of 65 professional typists is taken and results in a sample mean speed of 33 characters per minute. Identify the parameters needed to calculate a condence interval at the 99% confidence level. Then nd the confidence interval. 10.10 10.05 10.025 10.01 10.005 1.282 1.645 1.960 2.326 2.576 You may use a calculator or the common z values above. 0 Round the final answer to one decimal place, if necessary. Provide your answer below