Hello I need to see the work and formulas please

Question 5

What is the estimated 95% confidence interval (CI) of the difference in proportions between schoolchildren and adults developing nausea and vomiting following holiday parties? Assign groups 1 and 2 to be schoolchildren and adults, respectively.

Please note the following: 1) in practice, you as the analyst decide how to assign groups 1 and 2 and subsequently interpret the results appropriately in the context of the data, though for the purposes of this exercise the groups are assigned for you; 2) 0 and 1 are defined as no and yes, respectively, which is a typical coding scheme in Public Health; 3) 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; and 4) you may copy and paste the data into Excel to facilitate analysis.

Table 1. Schoolchildren

Nausea and

Vomiting?

1 0

2 0 Table 2. Adults

3 1 Subject Nausea and Vomiting?

4 1__________ 1 0

5 1 __________2 0

6 1 __________3 0

7 0 __________4 1

8 1 __________5 0

9 1_________ 6 1

10 0 ________7 0

11 1 ________8 1

12 1 ________9 0

13 0 _______10 0

14 0 _______11 0

15 1 _______12 1

16 0 _______13 0

17 0 _______14 0

18 1 _______15 1

19 1 _______16 1

20 0 _______17 1

21 1

22 1

23 1

Select one:

a. -0.1105 to 0.5044

b. -0.1182 to 0.4691

c. -0.0978 to 0.5825

d. -0.1282 to 0.5598

Question 6

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.

Table

Subject Time Point 1, Shirts _____Time Point 2, Tank Tops

Vitamin D (ng/mL) _____Vitamin D (ng/mL)

1 41.889________52.420

2 48.844________60.832

3 46.112 ________59.230

4 34.895_______ 67.811

5 48.352_______ 45.549

6 49.448 ________54.457

7 56.280 ________60.167

8 42.598_______ 55.420

9 45.568_______ 51.816

10 52.146_____ 52.543

11 61.125______52.874

12 56.393______50.770

13 39.190 ______58.323

14 53.777______44.138

15 54.834______61.088

16 57.670______51.084

17 50.544______57.402

18 61.819______57.703

19 51.697______63.357

20 57.556______56.468

Select one:

a. 0.21 to 9.08 ng/mL

b. 0.20 to 9.43 ng/mL

c. 0.23 to 11.03 ng/mL

d. 0.24 to 10.03 ng/mL