Q1 Correlation between coffee and cholesterol A study from a Colombian research center is about to publish a pilot study regarding a new coffee plant that they believe can reduce total cholesterol in humans They gave increasing doses (cups of coffee) to a test patient over several weeks and recorded the following data caffeine (mg) Cholesterol level (mg dL) 100 684 200 547 300 200 400 399 500 415 600 400 700 58 Evaluate the claim that the caffeine from this new plant reduces cholesterol by plotting caffeine levels (x) versus the cholesterol levels (y) What is the correlation coefficient r and what does it mean in this case What is the coefficient of determination and what does it mean in this case Is there a statistically significant correlation between caffeine intake and cholesterol levels in this case Click on the link below for help with how to do a Simple Regression and r value test in StatCrunch How to do a simple regression and r value in StatCrunch Q2 Regression What is the predicted cholesterol level Given the data presented in Discussion Question 1 for this week, determine the cholesterol level of someone who drank two and a half cups of coffee a day To get the answer, plot a regression line inStatCrunch and post your answers from StatCrunch for the following a) What is the intercept (or what would be your cholesterol level while ingesting no caffeine ) b) What is the slope (or, what is what we call b in the linear regression equation ) c) What is the cholesterol level of someone who drank two and a half cups of coffee a day (given that 1 cup of coffee equals 100 mg of caffeine)

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Q1 Correlation between coffee and cholesterol A study from a Colombian research center is about to publish a pilot study regarding a new coffee plant

Q1 Correlation between coffee and cholesterol

A study from a Colombian research center is about to publish a pilot study regarding a new coffee plant that they believe can reduce total cholesterol in humans. They gave increasing doses (cups of coffee) to a test patient over several weeks and recorded the following data:

caffeine (mg)	Cholesterol level (mg/dL)
100	684
200	547
300	200
400	399
500	415
600	400
700	58

Evaluate the claim that the caffeine from this new plant reduces cholesterol by plotting caffeine levels (x) versus the cholesterol levels (y).

What is the correlation coefficient r and what does it mean in this case?
What is the coefficient of determination and what does it mean in this case?
Is there a statistically significant correlation between caffeine intake and cholesterol levels in this case?

Click on the link below for help with how to do a Simple Regression and r value test in StatCrunch:

How to do a simple regression andrvalue in StatCrunch

Q2 Regression- What is the predicted cholesterol level?

Given the data presented in Discussion Question 1 for this week, determine the cholesterol level of someone who drank two and a half cups of coffee a day. To get the answer, plot a regression line inStatCrunch and post your answers from StatCrunch for the following:

a) What is the intercept? (or what would be your cholesterol level while ingesting no caffeine?) b) What is the slope? (or, what is what we callbin the linear regression equation?) c) What is the cholesterol level of someone who drank two and a half cups of coffee a day (given that 1 cup of coffee equals 100 mg of caffeine)?