Question: The following table presents the mean cumulative weight loss in grams for 60 patients receiving propranolol and for 121 control patients following sweating during insulin-induced hypoglycemia.

Mean loss weight between treatment and control for 91 patients during insulin induced hypoglycemia

Note: y ou can assume equal variances between the two groups

1. Provide a 95% confidence interval for the mean weight loss for each group.
2. Using a two-sided alternative, do the data present sufficient evidence to conclude that the mean cumulative weight loss is different for the two groups? (Use = 0.05)
3. Write out your conclusion in words as you would present them in a report of the findings.
4. Perform the same hypothesis test changing the significance (alpha) level to .01 ( =0.01). Does your result change?

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