A study is run to estimate the mean total cholesterol level in children 9-11 years of age. A sample of 169 participants is selected and their mean total cholesterol levels is 160.3. Assume the population standard deviation is 18.2. Give the following information for a 95% confidence interval for the mean cholesterol. 1. The value for Z or t and how you found it. 2. The confidence interval equation filled in. 3. The calculation of the Standard Error

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