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 XXXXXXXXXXAssume the...

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
4. The calculation of the Margin of Error
5. The upper and lower limits
6. An interpretation of the confidence interval
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