Question

# Find the value of t for the difference between two means based on an assumption of...

Find the value of t for the difference between two means based on an assumption of normality and this information about two samples. (Use sample 1 - sample 2. Give your answer correct to two decimal places.)

 Sample Number Mean Std. Dev. 1 26 37.8 13.5 2 27 43.2 11.2

Test Statistics

We have assumed that the population variances are equal, the t-statistic is computed as follows:

To two decimal places is

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