Question

1. Case Study: Prevalence of Mild Anemia in School Children in a Rural Community in Peru Introduction: Mild anemia is a public health problem in Peru, especially in rural areas where access to adequate nutrition may be limited. This study seeks to investigate the prevalence of mild anemia in schoolchildren in a rural community in Peru and its possible association with access to a balanced diet. Problem: What is the prevalence of mild anemia in schoolchildren in a rural community in Peru and how is it related to access to a balanced diet? / Determine whether there is a significant association between dichotomous variables. Anemia (Present/absent). Balanced diet (Yes / No). Data were collected from 95 schoolchildren in a rural community in the country, recording their anemia status (present or absent) and their access to a balanced diet (yes or no), as assessed by parents or guardians. The data are presented in the following table: Table 1: Type of diet and anemia in children in a rural community, Peru 2022. Balanced diet Anemia Present Absent No 32 12 Yes 9 42 With a significance level of 0.05, can we conclude that anemia and balanced diet are independent? Apply the Chi Square test to determine if there is a significant association between these two variables in the sample of school children from the rural community. Interpret the results obtained and draw conclusions about the relationship with food in the community studied. Reflection Question: After performing the Chi-Square analysis and obtaining the results, reflect on what other variables could influence reducing the prevalence of anemia that were not included in this study?

240

likes

1201 views

Answer to a math question 1. Case Study: Prevalence of Mild Anemia in School Children in a Rural Community in Peru Introduction: Mild anemia is a public health problem in Peru, especially in rural areas where access to adequate nutrition may be limited. This study seeks to investigate the prevalence of mild anemia in schoolchildren in a rural community in Peru and its possible association with access to a balanced diet. Problem: What is the prevalence of mild anemia in schoolchildren in a rural community in Peru and how is it related to access to a balanced diet? / Determine whether there is a significant association between dichotomous variables. Anemia (Present/absent). Balanced diet (Yes / No). Data were collected from 95 schoolchildren in a rural community in the country, recording their anemia status (present or absent) and their access to a balanced diet (yes or no), as assessed by parents or guardians. The data are presented in the following table: Table 1: Type of diet and anemia in children in a rural community, Peru 2022. Balanced diet Anemia Present Absent No 32 12 Yes 9 42 With a significance level of 0.05, can we conclude that anemia and balanced diet are independent? Apply the Chi Square test to determine if there is a significant association between these two variables in the sample of school children from the rural community. Interpret the results obtained and draw conclusions about the relationship with food in the community studied. Reflection Question: After performing the Chi-Square analysis and obtaining the results, reflect on what other variables could influence reducing the prevalence of anemia that were not included in this study?

$Expert avatar$

Gene

4.5

108 Answers

1. **Datos Observados:**

- Sin alimentación balanceada:
- Anemia presente:

O_{11} = 32

- Anemia ausente:

O_{12} = 12

- Con alimentación balanceada:
- Anemia presente:

O_{21} = 9

- Anemia ausente:

O_{22} = 42

2. **Totales:**

- Filas:
- Sin alimentación balanceada:

32 + 12 = 44

- Con alimentación balanceada:

9 + 42 = 51

- Columnas:
- Anemia presente:

32 + 9 = 41

- Anemia ausente:

12 + 42 = 54

- Total general:

44 + 51 = 95

3. **Valores Esperados (

E_{ij}

):**

-

E_{11} = \frac{44 \times 41}{95} \approx 19

E_{12} = \frac{44 \times 54}{95} \approx 25

E_{21} = \frac{51 \times 41}{95} \approx 22

E_{22} = \frac{51 \times 54}{95} \approx 29

4. **Cálculo de

\chi^2

:**

-

\chi^2 = \sum \frac{(O_{ij} - E_{ij})^2}{E_{ij}}

\chi^2 = \frac{(32 - 19)^2}{19} + \frac{(12 - 25)^2}{25} + \frac{(9 - 22)^2}{22} + \frac{(42 - 29)^2}{29}

\chi^2 \approx 27.01

5. **Valor P y Grados de Libertad:**
- Grados de libertad

= (n_{\text{filas}} - 1) \times (n_{\text{columnas}} - 1) = 1

- Valor P

= 0.0000002024

6. **Conclusión:**
- Dado que el valor P es mucho menor que el nivel de significancia de

0.05

, se rechaza la hipótesis nula.
- La conclusión es que existe una asociación significativa entre la presencia de anemia y el acceso a una alimentación balanceada.

Frequently asked questions (FAQs)

What is the solution to the system of inequalities: y ≤ -2x + 4 and y > 3x - 2?

Question: What is the fifth derivative of f(x) = sin(x^2) at x = π/4?

Math question: Calculate the square root of 5625, subtract the square root of 2304, and divide the result by the square root of 144. What is the value?

New questions in Mathematics

How much volume of water in MegaLiters (ML) is required to irrigate 30 Hectare crop area with depth of 20mm?

Let 𝑢 = 𝑓(𝑥, 𝑦) = (𝑒^𝑥)𝑠𝑒𝑛(3𝑦). Check if 9((𝜕^2) u / 𝜕(𝑥^2)) +((𝜕^2) 𝑢 / 𝜕(𝑦^2)) = 0

If we have the sequence: 3, 6, 12, 24 Please determine the 14th term.

Let the vectors be u=(-1,0,2) , v=(0,2,-3) , w=(2,2,3) Calculate the following expressions a)<u,w> b) <2u- 5v,3w>

8x²-30x-10x²+70x=-30x+10x²-20x²

Eight acts are scheduled to perform in a variety show how many different ways are there to schedule their appearances show your work

5) A family with a father, mother and 3 children must sit on five chairs in a row and the only restriction is that the mother must be at one end. In how many different ways can they be seated?

A client did not advance L 10,000 for the rental of a parking area and it corresponds to 4 months, of which 2 months were consumed

Determine the absolute extrema of the function 𝑓(𝑥)=𝑥3−18𝑥2 96𝑥 , on the interval [1,10]

what is the annual rate on $525 at 0.046% per day for 3 months?

7/6-(-1/9)