!!!!!!!!Be sure to use the t distribution because a sample is taken but no sigma is known. We only know the sample std d
Posted: Sun Jul 10, 2022 10:41 am
!!!!!!!!Be sure to use the t distribution because a sample istaken but no sigma is known. We only know the sample std dev, s. Besure on the sample size questions you use the correct z value. Zvalue is 1.96!!!!!!!!
A. Confidence Interval and Sample Size for µ-- How much do you read? (10 points)
A recent Gallop poll asked a random sample of 1006 Americans“During the past year about how many books, either hard cover orpaperback, did you read either all or part of the waythrough?” The results of the survey gave a sample mean of13.4 books and a standard deviation of 16.6 books read all or partof the way through.
Choose a number between 80 and 98. This is the level ofconfidence you will use for this section of problems. What is yournumber? ______82_______
!!!!!!!!Be sure to use the tdistribution because a sample is taken but no sigma is known. Weonly know the sample std dev, s. Be sure on the sample sizequestions you use the correct z value. Z value is 1.96!!!!!!!!
A. Confidence Interval and Sample Size for µ-- How much do you read? (10 points)
A recent Gallop poll asked a random sample of 1006 Americans“During the past year about how many books, either hard cover orpaperback, did you read either all or part of the waythrough?” The results of the survey gave a sample mean of13.4 books and a standard deviation of 16.6 books read all or partof the way through.
Choose a number between 80 and 98. This is the level ofconfidence you will use for this section of problems. What is yournumber? ______82_______
!!!!!!!!Be sure to use the tdistribution because a sample is taken but no sigma is known. Weonly know the sample std dev, s. Be sure on the sample sizequestions you use the correct z value. Z value is 1.96!!!!!!!!