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# Question 7 of 22 (1 point) Attempt 1 of Unlimited View question in a pour 82... Question 7 of 22 (1 point) Attempt 1 of Unlimited View question in a pour 82 Section Exercise 21 (cale) Online courses: A sample of 265 students who were taking online courses were asked to describe their overall impression of online learning on a scale of 1-7, with 7 representing the most favorable impression. The average score was 5.61, and the standard deviation was 0.94. (a) Construct a 99.5% confidence interval for the mean score. (b) Assume that the mean score for students taking traditional courses is 5.57. A college that offers online courses claims that the mean scores for online courses and traditional courses are the same. Does the confidence interval contradict this claim? Explain. Part: 0/2 olo Part 1 of 2 (a) A 99.5% confidence interval for the mean score is <<.(Round the answers to at least two decimal places.  #### Earn Coins

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• ### Question 8 of 18 (1 point) Attempt 1 of Unlimited View question in a popur! 72... Question 8 of 18 (1 point) Attempt 1 of Unlimited View question in a popur! 72 Section Exerci Online courses: A sample of 269 students who were taking online courses were asked to describe their overall impression of online learning on a scale of 1-7, with 7 representing the most favorable impression. The average score was 5.77, and the standard deviation was 0.98. (a) Construct a 90% confidence interval for the mean score. (b) Assume that the mean score for...

• ### A sample of 250 students who were taking online courses were asked to describe their overall...

A sample of 250 students who were taking online courses were asked to describe their overall impression of online learning on a scale of 1-7 with 7 representing the most favorable impression. The average score was 4.98 and the standard deviation was 0.87. Construct a 90% confidence interval for the mean score. Round your final answers to 3 decimal places. The 90% confidence interval for the mean score is: ( , )

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• ### Question 1 of 7 (1 point) Attempt 1 of 1 View question in a pour och... Question 1 of 7 (1 point) Attempt 1 of 1 View question in a pour och 30m Remaining 8.1 Section Exercise 33-36 A sample of size n=63 is drawn from a population whose standard deviation is o - 48. co Part 1 of 2 (a) Find the margin of error for a 95% confidence interval for J. Round the answer to at least three decimal places. The margin of error for a 95% confidence interval for u is Part 2...

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• ### Question 16 of 18 (1 point) Attempt 1 of Unlimited 74 Section Exercise 12 (cal Ages... Question 16 of 18 (1 point) Attempt 1 of Unlimited 74 Section Exercise 12 (cal Ages of students: A simple random sample of 110 U.S. college students had a mean age of 23.02 years. Assume the population standard deviation is o = 4.77 years. Construct a 98% confidence interval for the mean age of U.S. college students. Round the answers to two decimal places. A 98% confidence interval for the mean age of U.S. college students is