Suppose the investigator of the pilot study wants to expand to a larger study to
ID: 3227497 • Letter: S
Question
Suppose the investigator of the pilot study wants to expand to a larger study to make sure 80% power s achieved. What sample size is needed to detect a difference in means of 75 given the standard deviation of 472.57? What sample sire is needed to ensure adequate power based on question 7 if it is suspected there will be 15% attrition? Suppose we have data on daily vitamin E intake (lU/day) from 16 different people on four different diets: Row Food. Vegetarian, Vegan, and Mediterranean. Conduct an ANOVA to determine if there is a significant difference in vitamin E intake among the 4 different groups and conduct this test with alpha -0.05. True or False: H_A: Vitamin E intake for Raw Food diet > Vegetarian diet > Vegan diet > Mediterranean diet What are the df_between? a. 3 b. 4 c. 11 d. 12 What are the df_offer? a. 12 b. 13 c. 14 d. 15 What is the critical value? a. +1.96 b. +3.24 c. +3.49 d. +1.64 Complete the table below. What is SS_between? a. 3.86 b. 46.36 c. 34.77 d. 139.08 What is MS_error? a. 8.32 b. 7.63 C. 1098.48 d. 6.10 What is the F test statistic? a. 1.02 b. 3.6 C. 2.5 d. 1.52 True or False: Reject the null hypothesis as the test statistic is greater than the critical value. Patients with heart failure, diabetes, cancer, and lung disease who have various Infections from gram negative organisms often receive aminoglycosides. One of the side effects of aminoglycosides is nephrotoxicity (possible damage to the kidney). A study was performed comparing the nephrotoxicity (rise in serum creatinine of at least 0.5 mg/dL) for the aminoglycoside gentamicin. The following results were obtained: Test the hypotheses that there is a significant relationship between gentamicin and nephrotoxicity using a chi-square test with alpha = 5%. What is the alternative hypothesis? a. There is no association between gentamicin and nephrotoxicity b. There is an association between gentamicin and nephrotoxicityExplanation / Answer
(9) Vitamin E intake for RAW food diet>vegiratian diet>vegan diet> MEditarian diet(FALSE)
(10) What are the degres of fredom between =k-1
=4-1
=3
(11)what are the degrees of fredom error=n-k
=16-4
=12
(12) Anova table:
(13)
SS between=34.76
(14)
Ms error=SSerro/df
=91.54/12
=7.628
(15) F statistics:
F=11.5866/7.628
=1.5188
Rawfood vegetarian vegan mediterranean 7.1 5.2 4.8 5.4 6.9 4.5 15.2 6.2 7.4 3.3 6.4 4.9 8.2 5.8 8.8 11.1Related Questions
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