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Assume the HADS scores in the study sample are normally distributed with a mean of 5.6 and a standard deviation of 4.75. If 19 study

Assume the HADS scores in the study sample are normally distributed with a mean of 5.6 and a standard deviation of 4.75. If 19 study participants complete the HADS, what would be the 99% confidence interval around this estimate of the mean? 1. What is the critical value? (1 point) a. 2.552 b. -2.539 c. 2.861 d. 2.878

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