Reference no: EM132394371

Assignment

Problem 1 Suppose Manar was very concerned about how people's consumption of cholesterol rich foods makes them susceptible to heart diseases. Recently, she heard that consumption of margarine as a replacement to butter can reduce body cholesterol level. Manar conducted a small pilot study to test whether body cholesterol level was reduced after using a certain brand of margarine as part of a low fat, low cholesterol diet.

To test her assumption, she asked her study subjects (18 men) to consume on average 2.31 Oz of the active ingredient, stanol easter (a type of margarine), a day for four months. Manar collected data about cholesterol levels of 18 men prior to margarine diet and four months after the margarine diet. Does Manar's assumption of eating margarine diet is supported by data (provided below). Conduct the appropriate statistical test at a = .05 using SPSS. Please conduct descriptive analysis, appropriate statistical assumption tests, appropriate statistical test statistics analysis, and calculation of effect size measure.

You should also write appropriate null and alternative hypothesis. In your response to this problem, please provide a write-up (should include description of results, statistical assumptions, interpretation of findings, and effect size), SPSS output, and SPSS syntax from your analysis. For write-up, please follow appropriate format from your profession's specific journal. Write-up should be concise containing only what is required.

Cholesterol Level Before Diet	Cholesterol Level 4 Weeks after diet
6.42	5.83
6.76	6.20
6.56	5.83
4.80	4.27
8.43	7.71
7.49	7.12
8.05	7.25
5.05	4.63
5.77	5.31
3.91	3.70
6.77	6.15
6.44	5.59
6.17	5.56
7.67	7.11
7.34	6.84
6.85	6.40
5.13	4.52
5.73	5.13

Problem 2

Joseph is interested in the genetics of the rooting properties of tomato plants. He has been working with a population of near isogenic lines (i.e. almost genetically identical), which have been derived from a cross between an inbred commercial cultivar, M82, and a wild relative. The lines are genetically identical to M82 except for one region (different for each line) where the lines have the genes of the wild relative. He has identified two lines (called Line A and Line B) which appear to differ from M82 in some rooting properties. He performed an experiment to examine in more detail the rooting properties of these two lines relative to M82. In the experiment he studied the ability of roots to penetrate a barrier.

He grew tomato plants in individual plastic tubes of compost 30 cm tall, with a membrane across the bottom of the tube which resists root growth. When the plants are a three-week-old, for each plant he recorded the length by which the longest root has penetrated the membrane. Does data provide an evidence to Joseph that root properties of Lines A and B are different than cultivar, M82? Also, does Line A has better root properties than Line B. Conduct the appropriate statistical test at a = .05 using SPSS. Please conduct descriptive analysis, appropriate statistical assumption tests, appropriate statistical test statistics analysis, and calculation of effect size measure. You should also write appropriate null and alternative hypothesis.

In your response to this problem, please provide a write-up (should include description of results, statistical assumptions, interpretation of findings, and effect size), SPSS output, and SPSS syntax from your analysis. For write-up, please follow appropriate format from your profession's specific journal. Write-up should be concise containing only what is required.

Problem 3 

Jana read about smoking and how smoking can affect baby's birthweight. She is very interested to conduct a pilot study to test the asscrtation about relationship between smoking by mother and baby's birthweight. She collected birthweight data from 42 new born babies. Almost half of the babies born to non-smoking mothers and another half were born to smoking mothers. Conduct the appropriate statistical test at a = .05 using SPSS to test whether baby birthweights differ based on whether their mother smoked or not smoked. Please conduct descriptive analysis, appropriate statistical assumption tests, appropriate statistical test statistics analysis, and calculation of effect size measure.

You should also write appropriate null and alternative hypothesis. In your response to this problem, please provide a write-up (should include description of results, statistical assumptions, interpretation of findings, and effect size), SPSS output, and SPSS syntax from your analysis. For write-up, please follow appropriate format from your profession's specific journal. Write-up should be concise containing only what is required.

Attachment:- Data File.rar