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 76.64 and the sample standard deviation was 2.7. 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 71.65 and 8.4, respectively. Estimate with 99% confidence the difference between the two population mean scores; do not assume equal population variances. E Click the icon to view the Student's t distribution table. The 99% confidence interval is from a lower limit of to an upper limit of (Round to two decimal places as needed.)

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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 76.64 and the sample standard deviation was 2.7. 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 71.65 and 8.4, respectively. Estimate with 99%
confidence the difference between the two population mean scores; do not assume equal population variances.
A Click the icon to view the Student's t distribution table.
The 99% confidence interval is from a lower limit of
to an upper limit of
(Round to two decimal places as needed.)
Transcribed Image Text: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 76.64 and the sample standard deviation was 2.7. 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 71.65 and 8.4, respectively. Estimate with 99% confidence the difference between the two population mean scores; do not assume equal population variances. A Click the icon to view the Student's t distribution table. The 99% confidence interval is from a lower limit of to an upper limit of (Round to two decimal places as needed.)
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