SOLUTION: A researcher collected sample data for 11women ages 18 to 24 The sample had a mean serum cholesterol level (measured in mg/100 mL) of 189.9 with a standard deviation of 8.8. Assumi

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Question 137968: A researcher collected sample data for 11women ages 18 to 24 The sample had a mean serum cholesterol level (measured in mg/100 mL) of 189.9 with a standard deviation of 8.8. Assuming that serum cholesterol levels for women ages 18 to 24 are normally distributed, find a 95 confidence interval for the mean serum cholesterol level of all women in this age group. Then complete the table below.
Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place.
(If necessary, consult a list of formulas

Answer by stanbon(48568) About Me  (Show Source):
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A researcher collected sample data for 11women ages 18 to 24 The sample had a mean serum cholesterol level (measured in mg/100 mL) of 189.9 with a standard deviation of 8.8. Assuming that serum cholesterol levels for women ages 18 to 24 are normally distributed, find a 95 confidence interval for the mean serum cholesterol level of all women in this age group.
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Formula:
x-bar = 189.9
E = t= 1.812 = 4.8078
95% CI: 189.9-4.8078 < u < 189.9+4.8078
95% CI: 185.09 < u < 194.71
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Cheers,
Stan H.






Then complete the table below.
Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place.