confidence interval question | Nursing Term Papers


Devry psyc110 Chapter 04 postTest latest 2015 decemberSeptember 1, 2021Emergency-DUE TOMORROW AT 1:00pm (can not be late or postponed)September 1, 2021

From a random sample of 7 students in an introductory finance class that uses group-learning techniques, the mean examination score was found to be 76.07 and the sample standard deviation was 2.3.
For an independent random sample of 8 students in another introductory finance class that does not use group-learning techniques, the sample mean and standard deviation of exam scores were 73.81 and 8.6, respectively. Estimate with 90%
confidence the difference between the two population mean scores; do not assume equal population variances.

The 90% confidence interval is from a lower limit of to an upper limit of .
(Round to two decimal places as needed.)

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