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noname [10]
3 years ago
15

The names of all 135 students in a professor's class are written on identical slips of paper, and the slips are placed into a la

rge glass jar. Then, the professor selects 5 random slips from the jar. Identify the kind of sample that is being used.
Mathematics
1 answer:
Monica [59]3 years ago
3 0

Answer: simple random sample.

Step-by-step explanation:

In the given scenario , the professor is using a lottery system which in term of statistics is known as simple random sampling technique.

In this technique a sample is drawn chosen from the entire population in such a way that all the participants in the population has an equal chance to get chosen.

Here , the professor selects 5 random slips from the jar and the chances of getting selected is equal for each students.

Thus , this is a simple random sample.

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2(10) + 2(x – 4) please simplify the expression
kolezko [41]

Answer:

3

Step-by-step explanation:

4 0
2 years ago
Farah harvests 20 pounds of tomatoes from her garden. She needs 4 4/5 pounds to make a batch of soup. Additionally, if she uses
Romashka [77]

Answer:

1 batch

Step-by-step explanation:

Farah needs 4 and 4/5 pounds of tomatoes & and additional 5 and 3/5 pounds of tomatoes to make soup.

4.8 + 5.6 = 10.5 pounds per soup

10.5*2 = 21 > 20 pounds

Farah would need one more pound of tomatoes in order to make 2 batches of soup. Therefore she can only make 1 batch.

6 0
3 years ago
Rewrite the equation by completing the square.<br> 4x2 + 28x + 49 = 0<br> (x+) =
Vlada [557]

Answer: x = - 3.5

Step-by-step explanation:

Rewrite the equation by completing the square.

4x2 + 28x + 49 = 0

Completing the square method :

Divide through by the Coefficient of x^2

x^2 + 7x + (49/4) = 0

a = 1, b = 7, c = 49/4

Move c to the right side of the equation

x^2 + 7x = - 49/4

Complete the square on the left hand side by squaring its half of the x term

(7/2)^2 = (49/4)

Add the output to both sides of the equation

x^2 + 7x + (49/4) = - (49/4) + (49/4)

(x + 7/2)^2 = 0

Square root of both sides

x + 7/2 = 0

x = - 7/2

x = - 3.5

4 0
3 years ago
a farmer has 24 yards of rope that needs to be cut into 1/4 yards of pieces. How many pieces of the rope does the farmer collect
Mazyrski [523]

Answer:6

Step-by-step explanation:

7 0
3 years ago
The area of a rectangle is 28 square meters. The length is 7meters.
Leviafan [203]

Answer:

width is 4 meters

Step-by-step explanation:

A = l*w  where l is length and w is width

28 = 7*w

Divide each side by 7

28/7 = 7w/7

4 =w

7 0
3 years ago
Read 2 more answers
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