The work has not been graded but I like the output that was submitted to me. Is it possible for the same prof to do the next assignment I will be submitting? If possible, I will greatly appreciate it.
Helleo I need to see how the problems are solved.
What is the estimated 95% confidence interval (CI) of the average blood vitamin D level of US landscapers in ng/mL? Please note the following: 1) you might calculate a CI that is different from any of the multiple choice options listed below due to rounding differences, therefore select the closest match; 2) ensure you use either the large or small sample CI formula as appropriate; and 3) you may copy and paste the data into Excel to facilitate analysis.
a. 23.9 to 30.5 ng/mL
b. 28.3 to 32.6 ng/mL
c. 25.1 to 36.9 ng/mL
d. 26.3 to 34.9 ng/mL
What is the estimated 95% confidence interval (CI) of the average difference in blood vitamin D levels between short sleeve shirt and tank top attire amongst US landscapers in ng/mL?
Please note the following: 1) in practice, you as the analyst decide how to calculate the difference in vitamin D levels between time points for a given study participant, and subsequently interpret the aggregated results appropriately in the context of the data, though for the purposes of this exercise the difference is assigned for you as follows. Define the difference as the second minus the first time points, which is common practice, since the plus or minus sign of the resulting difference reflects any change over sequential time; 2) you might calculate a CI that is different from any of the multiple choice options listed below due to rounding differences, therefore select the closest match; 3) ensure you use either the large or small sample CI formula as appropriate; and 4) you may copy and paste the data into Excel to facilitate analysis.
SubjectTime Point 1, Shirts Vitamin D (ng/mL)Time Point 2, Tank TopsVitamin D (ng/mL)
a. 5.97 to 14.32 ng/mL
b. 7.06 to 12.39 ng/mL
c. 7.77 to 14.25 ng/mL
d. 6.50 to 13.39 ng/mL
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