A self-selecting sample is not likely to be representative. The reason why a self-selecting sample is not likely representative would be discussed below.
<h3>What is self-selecting sample?</h3>
A self-selection sample is determined by the individual that are used as data for the research. They are the ones that will determine the inclusion or exclusion of the sample units by either affirming or declining to participate.
The reason self-selecting sample is not likely to be representative is that it is too bias as the individuals that volunteered may not be able to satisfy the goals of the research.
Therefore, a self-selecting sample is not likely to be representative.
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brainly.com/question/26436072
Factors are numbers that divide evenly into a number
best way to do it start at 1 and go up
example 24
1 and 24
2 and 12
3 and 8
4 and 6
5 and (that's doesn't go in evenly so it not a factor)
6 and 4 and when they repeat like this, stop
Now list all your numbers
1, 2, 3, 4, 6, 8, 12, 24 and the factors of 24
1. check the pic at the bottom.
2. Since we are asked for percentage, so a ratio, let the number of kids with both umbrellas and raincoats be 8.
Let x be the number of children with raincoats, but not umbrellas
Let y be the number of children with umbrellas but not raincoats.
3. Then, x+y+8=100 (100% is 100, since we assumed 8% to be 8 kids)
this gives us x+y=92.
4. "The total number of kids with umbrellas is twice the total number of kids with raincoats. " :
8+y=2(x+8)
8+y=2x+16
y-2x=8
5. substitute x=92-y in y-2x=8, we get
y-2(92-y)=8
y-184+2y=8
3y=192
y=64
64% ofkids bring only an umbrella.
So, here we have an exponential function.
Remember that an exponential function has the form:
Where a represents an initial amount, and r is the rate of this amount to change. (Increase, or decrease).
So, given that the population of City A in 2000 was 40 thousand people and the population increased by 13% each year, we can say that
So,
For city B:
But something different happens with city C. This is not an exponential function, this is a linear function.
So,