Calculate ldl difference for each of 14 men, then the mean x

Assignment Help Basic Statistics

Reference no: EM13953203

A study was conducted to investigate whether oat bran cereal helps to lower serum cholesterol in men with high cholesterol levels. Fourteen men were placed randomly on a diet that included either oat bran or cornflakes; after two weeks, their low-density lipoprotein (LDL) choles- terol levels were recorded. Each man was then switched to the alternative diet. After a second two-week period, the LDL cholesterol level of each person was recorded again. The data are shown in Table E2.18. Calculate the LDL difference (cornflake-oat bran) for each of the 14 men, then the mean x, variance s2, and standard deviation s for this sample of differences.

LDL (mmol/L)

Subject Cornflakes Oat Bran

1 4.61 3.84

2 6.42 5.57

3 5.40 5.85

4 4.54 4.80

5 3.98 3.68

6 3.82 2.96

7 5.01 4.41

8 4.34 3.72

9 3.80 3.49

10 4.56 3.84

11 5.35 5.26

12 3.89 3.73

13 2.25 1.84

14 4.24 4.14

Reference no: EM13953203

Questions Cloud

Check whether the events are dependent or independent : A student throws a deck of cards into the air and then counts the number of cards that, after landing, are showing the face of the card

Benefit and limitations of organizational strategic planning : Post an explanation of ethical, financial, and cultural benefits and limitations of organizational strategic planning. Include how ever-changing stakeholders might impact the strategic plan

Problem regarding the future payments : You are required to pay $5,000 for college fees for each of the next four years, and a generous uncle has offered to give you enough money now to cover these future payments. How much must he give you now if you can invest at 10% per year compound..

Calculate separately for each group the mean x, variance s2 : An experiment was conducted at the University of California-Berkeley to study the effect of psychological environment on the anatomy of the brain. A group of 19 rats was randomly divided into two groups. Twelve animals in the treatment group lived..

Calculate ldl difference for each of 14 men, then the mean x : After a second two-week period, the LDL cholesterol level of each person was recorded again. The data are shown in Table E2.18. Calculate the LDL difference (cornflake-oat bran) for each of the 14 men, then the mean x, variance s2, and standard de..

Explain user-testing and its purpose : 1. Define and describe the two main design considerations for instructions. 2. Explain user-testing and its purpose.

List of the highest priority risks for barclays code : Create a list of the 5 highest priority risks for Barclays's code of Conduct , and create a Supplier Code of Conduct

Identify and explain the fundamental right you selected : Identify and explain the fundamental right you selected. Explain how the fundamental right you selected is rooted in the Due Process Clause in the Constitution. Be specific and reference this week's Learning Resources

Find the area that should give the maximum savings : A company projects that its total savings S (in dollars) by converting to a solar-heating system with a solar-collector area A (in M2) will be equal to the formula below. Find the area that should give the maximum savings and find the amount of th..

User Account

All Pages