22higlebosa

11.06.2021 • 

Mathematics

The Food Marketing Institute shows that 17% of households spend more than $100 per week on groceries. Assume the population proportion is p = 0.17 and a sample of 900 households will be selected from the population. Use z-table. a. Calculate σ(p), the standard error of the proportion of households spending more than $100 per week on groceries (to 4 decimals).
b. What is the probability that the sample proportion will be within +/- 0.02 of the population proportion (to 4 decimals)?
c. What is the probability that the sample proportion will be within +/- 0.02 of the population proportion for a sample of 1,400 households (to 4 decimals)?

Ответ:

camillaowens206

11.07.2021

Mathematics

---

The right answer is:

(a) 0.01252

(b) 0.8882

(c) 0.9544

Step-by-step explanation:

Given:

Population proportion,

P = 0.17

Sample size,

n = 900

(a)

The standard error of proportion will be:

⇒

By putting the values, we get

           

           

           

(b)

We know that,

Now,

⇒

By substituting the values, we get

     

     

     

⇒

                                   

                                   

                                   

(c)

We know that,

 

Now,

⇒

By substituting the values, we get

     

     

     

⇒

                                   

                                   

                                   

---

0,0(0 оценок)

Ответ:

edfwef5024

22.01.2023

Mathematics

---

Use pythagorean’s theorem and find the missing side lengths of the two smaller triangles and add them together
13^2 - 12^2 = 5
15^2 - 12^2 = 9
5+9 = 14
14 is the length of each side of the square
14^2 + 14^2 = 19.8
19.8 is the diagonal length of the inside if the square

---

0,0(0 оценок)