Answer:
There are 123,410 ways
Step-by-step explanation:
The number of ways or combinations in which we can select k elements from a group of n elements is given by:
In this case, we can replace n by 43 and k by 4, because we are going to select 4 light bulbs from a batch of 43 light bulbs.
So, the number of combinations is calculated as:
It means that there 123,410 ways to select 4 light bulbs from a batch of 43 lights bulbs to be tested for defects
Answer: A. scalene
<u>Step-by-step explanation:</u>
scalene = all three sides have different lengths
isosceles = two of the sides have the same length
equilateral = all three sides have the same length
AE = 5 <em>(2.5 + 2.5)</em>
ED = 3
AD = 7
Since all three sides have different lengths, it is a scalene triangle.
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If it is a right triangle, then 3² + 5² = 7²
9 + 25 = 49
34 ≠ 49 <em>so it is not a right triangle</em>
Answer:
A nonresponse might lead to a bias in the study due to the fact that the counselor may assume that those who did not reply to the email may have tried alcohol and they didn't want him(the counselor) to know.
Step-by-step explanation:
In statistical research, a bias is said to occur when systematic errors are introduced into sampling or testing by selecting or favoring one outcome over other outcomes.
Now, applying that definition to this question, we can say that a nonresponse might lead to a bias in the study due to the fact that the counselor may assume that those who did not reply to the email may have tried alcohol and they didn't want him(the counselor) to know.
Answer:
i havent had this one.
Step-by-step explanation:
