Question
A study measuring the weights of frogs given one of two different diets, with a goal of estimating the average difference in weight between the two treatments. The researchers estimated the average difference as 8 = 8.5 grams, with a standard error of the difference of se 1.5 grams. What would be an approximate lower value for the 95% confidence interval for the difference in weights between these two populations? You can assume that the sampling distribution under the null is normally distributed, and can use the rule of thumb that 95% of values for the normal distribution should be within two standard deviations of the mean. Select one: a. 10 grams b. 7.75 grams C 5.5 grams d. 11.5 grams € 7 grams
Answer
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