The purpose of a study by Tahmassebi and Curzon (A-33) was to compare the mean salivary flow

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The purpose of a study by Tahmassebi and Curzon (A-33) was to compare the mean salivary flow rate among subjects with cerebral palsy and among subjects in a control group. Each group had 10 subjects. The following table gives the mean flow rate in ml / minute as well as the standard error.image text in transcribed

Construct the 90 percent confidence interval for the difference in mean salivary flow rate for the two populations of subjects represented by the sample data. State the assumptions necessary for this to be a valid confidence interval.

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