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In: Statistics and Probability

The average cholesterol level in the general US population is 189 mg/dL. A researcher wants to...

The average cholesterol level in the general US population is 189 mg/dL. A researcher wants to see if the average cholesterol for men in the US is different from 189 mg/dL. She takes a sample of 81 American males and finds a sample mean of 194 mg/dL and a sample standard deviation of 10.4.

Create a 90% confidence interval for the true average cholesterol level of the general US male population.
What is the 90% confidence interval?

What is the correct interpretation of the confidence interval?

Are the assumptions met?

Conduct a hypothesis test at the 0.10 significance level to test the researcher’s question.
What are the hypotheses?

What is the significance level? A. 0.01B. 0.04 C. 0.05 D. 0.10
What is the value of the test statistic?

What is the p-value?

Solutions

Expert Solution

check the calculations and follow the method. If you will face any difficulties you can ask me.

orchestra answered 2 years ago
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