1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
sergiy2304 [10]
2 years ago
12

2.- Supóngase que los diámetros de los tornillos fabricados por una compañía están distribuidos normalmente con una media de 0.2

5 pulgadas y desviación estándar de 0.02 pulgadas. Se considera defectuoso un tornillo si su diámetro es menor igual a 0.20 pulgadas o mayor igual a 0.28 pulgadas. Hallar el porcentaje de tornillos defectuosos producidos.
Mathematics
1 answer:
Sergio [31]2 years ago
3 0

Answer:

7.30167%

Step-by-step explanation:

Usando la fórmula de puntuación z

z = (x-μ) / σ, donde x es la puntuación bruta, μ es la media de la población y σ es la desviación estándar de la población

Para x <0.20 pulgadas

z = 0.20 - 0.25 / 0.02

z = -2.5

Valor de probabilidad de Z-Table:

P (x <0.20) = 0.0062097

Para x> 0.28 pulgadas

z = 0.28 - 0.20 / 0.02

z = 1.5

Valor de probabilidad de Z-Table:

P (x <0.28) = 0.93319

P (x> 0.28) = 1 - P (x <0.28) = 0.066807

La probabilidad de que se produzcan tornillos defectuosos cuando el tornillo se considera defectuoso si su diámetro es inferior a 0.20 pulgadas o superior a 0.28 pulgadas es

P (x <0.20) + P (x> 0.28)

= 0.0062097 + 0.066807

= 0.0730167

Conversión a porcentaje

= 0.0730167 × 100

= 7.30167%

El porcentaje de tornillos defectuosos producidos es

7.30167%

You might be interested in
Yessir help a girl out!
REY [17]

Answer:

3rd option (not regular)

Step-by-step explanation:

all the other options are not true

4 0
3 years ago
What value of x satisfies
LenaWriter [7]

Answer:

See explanation

Step-by-step explanation:

The given trigonometric equation is cos(90-x)=-\frac{\sqrt{3} }{3}.

We take the inverse cosine of both sides to get:

90-x=cos^{-1}(-\frac{\sqrt{3} }{3})

90-x=125

x=125-90

x=-35\degree=325\degree to the nearest degree

None of the options satisfies the given equation.

But if the question is actually;

cos(90-x)=-\frac{\sqrt{3} }{2}

Then;

90-x=\cos^{-1}(-\frac{\sqrt{3} }{2}).

90-x=210.

90-x=210.

x=-120\degree.

Or

x=360-120=240\degree.

In this case the answer will be B

5 0
3 years ago
Read 2 more answers
Kimi’s dog gives birth to a litter of 4 puppies per year, on average. The relationship between time and the expected total numbe
VMariaS [17]
Hi i wanted to help you but i hate math do i am soooooooo sorry
7 0
2 years ago
Read 2 more answers
What is <br>2 divided by 192? ​
astra-53 [7]

Answer:

192/2 = 96 because is just the half of the number

5 0
2 years ago
What is the side length, in inches, of the pets
tatiyna

Candy draws a square design with a side length of x inches for the window at the pet shop. She takes the design to the printer and asks for a sign that has an area of 16x2 – 40x + 25 square inches. What is the side length, in inches, of the pet shop sign?

Answer:

the length of the sign is 4x-5 inches

Step-by-step explanation:

Given

Area of the square of design = 16x^{2} -40x+25

First we find the roots of equation 16x^{2} -40x+25=0

The roots of the quadratic equation ax^{2} +bx^{2} +c=0 are given by

x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}

where a=16, b=-40, c=25

x=\frac{40\pm\sqrt{(-40)^2-4\times 16\times 25}}{2\times 16}

x=\frac{40\pm\sqrt{1600-1600}}{32}

x=\frac{40\pm\sqrt{0}}{32}

x=\frac{40}{32}

x=\frac{5}{4}

4x=5\\4x-5=0

That is, the factors of the polynomial 16x^{2} -40x+25 are 4x-5 and 4x-5.

So, Area of the square design = 16x^{2} -40x+25 = (4x-5)^{2}

Area of a square = Length^2

Thus, the length of the sign is 4x-5 inches

7 0
3 years ago
Other questions:
  • write an equation to solve for x your only writing the equation. 7x+9 5×+3 there's three answers the bottom one is if none of th
    5·1 answer
  • Chris has 2 pairs of black socks, 4 pairs of red socks, and 18 pairs of white socks in a dresser drawer. What is the probability
    6·2 answers
  • Help on this please
    9·1 answer
  • Use the Distributive Property to simplify.<br> -(5t+8p+13cw)
    6·2 answers
  • Help!!!! I don't get this!!!!!!
    10·2 answers
  • Galen can reach up to a height of 1.87 meters while standing flat on the ground. His father can reach a height of 2.56 meters. H
    9·2 answers
  • Given the points P(3, 2) and R(6, 8), find the slope
    10·1 answer
  • Hi i really need help
    13·1 answer
  • Lum: Buna<br> 2cm:8cm ratio in simplest form
    7·1 answer
  • The scale model of a building is 8.5 inches tall. How tall is the actual building if the scale
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!