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adelina 88 [10]
3 years ago
9

A factory manufactures motorcycles. One of its employees, working in the quality control department, checks the first 10 and the

last 10 motorcycles manufactured in a day. This is what type of sampling?
Mathematics
1 answer:
Assoli18 [71]3 years ago
7 0

Answer:

Convenience sampling

Step-by-step explanation:

When sampling is done based in degree of ease or samples picked from observations that are easily accessible rather than prioritizing randomness or selection which will most be representative of the population, then such sampling is called convenience sampling. In some texts, it is also referred to as grab sampling as researchers choose from close, easy to reach samples. In the scenario above, the quality control takes the easy procedure of checking the first and last 10 motorcycles as this is easier than having to take samples at random tune intervals which will be a better representation of the entire motorcycles.

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tatyana61 [14]

Answer:

2 students study none of the subjects.

Step-by-step explanation:

Consider the attached venn diagram. First, we place that 1 student studies the three subjects. Then, we notice that 3 students study math and science, then 2 students study math and science only, since we have 1 that studies the three subjects. In the same fashion, we have that 3 students study Math and computer programming only (since they are 4 in total). Note that since 7 students study math, and we already have 6 students in our count in the math subject this implies that 1 student studies only math (the total number of students inside the math circle must add to 7).

We also have that 4 students study science and computer programming only. Which implies that we must have 3 students that study science only (10 students that study science in total) and 2 students study computer programming (for a total of 10 students). The total number of students that study none is the total number of students (18) minus the amount of students that is inside the circles (16) which is 2.

8 0
3 years ago
Read 2 more answers
What is the answer for x
alexandr402 [8]

Answer:

x = 8.5

Step-by-step explanation:

I got this answer by assuming the triangles were congurent, if they are not, the answer may vary.  

first, make an equation:

x + 8 = 3x - 9

bring 3x to the other side, by subtracting it

-2x + 8 = -9

Subtract 8

-2x = -17

divide by -2

x = 8.5

Then, just sub x into the formulas

5 0
3 years ago
Which should be calculated first to solve this story problem?  Marta has had a health club membership for 5 weeks. She goes to t
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The answer will be C. the total number of hours Marta spends swimming each visit. Hope it help!
4 0
3 years ago
Eight less than the product of a number n and<br> is no more than 94.
vladimir2022 [97]

First, let's call "a number": n

Then. "eight less than a number" can be written as: n-8  

This expression "is no more than 14" can be written as: n−8≤14

[13,22]

5 0
3 years ago
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Sveta_85 [38]
N+(n+2)+(n+4)=165
add everything together to get 
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7 0
3 years ago
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