A manager at a factory finds that in a random sample of 200 clocks, 15 are defective. What percent of the clocks are defective?


Of the 10,000 clocks from which the sample was chosen, about how many clocks are probably not defective.



The next day the manager finds only 8 of the 200 randomly selected clocks are defective. About how many clocks out of the 10,000 produced that day are probably defective?​

Answer:

Part A-7.5%

Part B-?

Part C-400 clocks

Step-by-step explanation:

part a-Write a sample ratio.-Divide the numerator by the denominator and multiply by 100.

part B-Use the sample ratio.-Multiply the sample ratio by the total number of clocks in the population.

Part C-Write a sample ratio.-Multiply the sample ratio by the total number of clocks in the population.

Percentage is a way to describe a part of a whole. Of the 10,000 clocks from which the sample was chosen, 400 clocks were defective.

A percentage is a way to describe a part of a whole. such as the fraction 1/4 can be described as 0.25 which is equal to 25%.

To convert a fraction to a percentage, convert the fraction to decimal form and then multiply by 100 with the '%' symbol.

A.) As it is given that a random sample of 200 clocks is taken out of 10,000 clocks, out of this 200, 15 clocks are defective. Therefore, the number of clocks that are defective in 200 random samples is 15, which can be written as,

Percentage of defective clock[tex]= \dfrac{15}{200} \times 100= 7.5\%[/tex]

As we got the ratio of the defective clocks, therefore, the number of defective clocks in 10,000 clocks can be written as,

[tex]7.5\%\ of\ 10,000\\\\= 0.075 \times 10,000\\\\= 750[/tex]

Hence, Of the 10,000 clocks from which the sample was chosen, 750 clocks were defective.

B.) As in the next day, the manager finds only 8 of the 200 randomly selected clocks are defective. Therefore,

Percentage of defective clock[tex]= \dfrac{8}{200} \times 100= 4\%[/tex]

As we got the ratio of the defective clocks, therefore, the number of defective clocks in 10,000 clocks can be written as,

[tex]4\%\ of\ 10,000\\\\= 0.04\times 10,000\\\\= 400[/tex]

Hence, Of the 10,000 clocks from which the sample was chosen, 400 clocks were defective.

Learn more about Percentage:

https://brainly.com/question/6972121

Plssss help me my test is due is 30 minutes.



The graph below shows the height of a ball versus time for one bounce. For how
many seconds was teh ball at a height of 7 feet or more above ground?

Factorise
[tex] a {2} - 7a + 12[/tex]
​

Write the equation of a line that passes through the points in the table.

A variable needs to be eliminated to solve the system of equations below. Choose the correct first step.
-9x + 4y = 17
9x + 7y = 5

A. Subtract to eliminate x.
B. Subtract to eliminate y.
C. Add to eliminate y.
D. Add to eliminate x.

One leg of an isosceles right triangle measures 5 inches. Rounded to the nearest tenth, what is the approximate length of the hypotenuse?

A: 2.5 inches
B: 5.0 inches
C: 7.1 inches
D: 9.8 inches

5. Short Response
You buy a sandwich for $3.45, a salad for $2.25, a
how much change do you receive from a $20 bill
Show your work.
What’s the answer

Find the solution for c+12=12

Question 26
In the figure shown below, m2C = 40° and AB = 8. Which equation could be used to find x?
A
8
400
B
с
A
x = 8cos 40°
B
x = 8sin 40°
C
x = 8tan 50°
D
X = Stan 40°

Factor 5z^2+45z. The factored polynomial is _

In right triangle ABC, m∡C=90° , m∡B=55° , and CA = 10. What is the length of the hypotenuse

HELPPP!
What is the solution to the system of equations graphed below?

your recipe makes 24 t mayonnaise. Each sandwich requires 2.5 t of mayonnaise. How many sandwiches can you make in 1 recipe ​

7.7.47 Assigned Media A snowstorm causes a bus driver to decrease the usual average rate along a 240-mile route by 10 miles per hour. As a result, the bus takes four hours longer than usual to complete the route. At what average rate does the bus usually cover the 240-mile route? miles per hour. The bus usually covers the 240-mile route at an average rate of​

What is the measure of this angle?
50
180
40
Or
140?

name the line of reflection used to map each primate to its image​

I really need help please

help me solve this question ;-;

what word does these letters make ? N I O A A R M C

Can someone plz help me with this one problem plzzzzz!!!

(I’M MARKING BRAINLIEST)!

what is the diameter in the circle above
7
3.5
14
3.14​

WILL GIVE BRAINLIEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
determine whether the ordered pair (5,18) is a solution of y=3x+3

Find the value of x

14 divided by 19 equals what ?

​

Please help me please help please help me please thank You

A local vet wants to survey his clients about their satisfaction regarding the care their pet received. He groups all of the clients by the type of pet they have (dog, cat, bird, exotic, or multiple), then randomly selects 5 people from each group. Which sampling method was used?

cluster sampling
simple random sampling
stratified random sampling
systematic random sampling

If one rectangular solid with dimensions of 6 x 6 x10 millimeters is stacked on top of an identical rectangular solid so that the bottom of the top box lines up perfectly with the top of the bottom box, what is the surface area of this new rectangular solid?​

A triangular flower bed has a base of 12 feet and a high of 28 feet what is the area of the flower bed?

Which property is shown by –5 • (6 + 7) = –5 • 6 + (–5) • 7?
A. Commutative Property of Addition
B. Identity Property of Addition
C. Distributive Property
D. Associative Property of Addition

Determine if the expression - 4x²/2 is a polynomial or not. If it is a polynomial,
state the type and degree of the polynomial.

Students at a middle school earn $9,625 during a fundraiser. If there are 850 students in the school, and each student earns the same amount, approximately how much money does each student earn?