AA A www-awn.aleks.com Order 4x4 5x5... T (1) THE STYLE... Home | iCampus Bb Week 11 – MA... X A ALEKS - Shasi... O CONFIDENCE INTERVALS AND HYPOTHESIS TESTL. Confidence interval for the population. Shasia OO OOD A psychologist wants to estimate the standard deviation of IQ scores. It is widely believed that IQ scores follow a normal distribution. Her random sample of 30 IQ scores has a mean of 102.8 and a standard deviation of 19.3. Find the 95% confidence interval for the population standard deviation based on this sample. Then give its lower limit and upper limit. Carry your intermediate computations to at least three decimal places. Round your answers to at least two decimal places. (If necessary, consult a list of formulas.) Lower limit: I Upper limit: U E 回 回 国回回

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