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Question Help Use the given information to find the number of degrees of freedom, the critical values x, and xp , and the confidence interval estimate of o. It is reasonable to assume that a simple random sample has been selected from a population with a normal distribution. Platelet Counts of Women 98% confidence; n= 25, s = 65.2. Click the icon to view the table of Chi-Square critical values. df = (Type a whole number.)