Answer:
С. .
This method of sampling is unbiased.
Explanations:
A method of sampling is referred to as bias when there is an imbalance in the sampling probability among members of the total population.
In this example, we have a survey sampling that involves anonymous members, there's no way the sampling probability can be lowered for some members than others because members of the whole population are unknown.
This is a fair sampling method and it is unbiased.
Answer:
Referring to the box plot, the median of the data is 50.
The range of the data can be found using the box plot.
Step-by-step explanation:
Base on the scenario been described in the question, the two statements that best described the box plot or histogram are ;
Referring to the box plot, the median of the data is 50.
The range of the data can be found using the box plot.
Answer:
Step-by-step explanation:
hello :
f(x)=(1/5)x
the domain is : D= ℝ =]-∞ ,+∞[ (linair function)
the range is : E= ℝ =]-∞ ,+∞[ ( f^-1 is linair function)
Answer:
$3870
Step-by-step explanation:
Hello, the initial deposit is $1000.
After one year, we will get 1000 + 7%*1000= 1000 * ( 1+7%) = 1000 * (1+0.07)
= 1000 * 1.07
And we want to compound it so the second year we will get
And after n years, we will get
In that example, we want to know how much we will get after 20 years, so this is:
Thank you.
Answer:
The surface area of given figure = 264 cm²
Step-by-step explanation:
From the given figure we can see that, a square pyramid mounded on a cube
The side of cube = 6 cm
Base of pyramid is one face of cube.
Slant height of pyramid = 7 cm
Total surface area = (5 * one face of cube ) + (lateral surface area of pyramid)
<u>To find the total surface area</u>
lateral surface area of pyramid = 4 * one face area of pyramid
One face area of cube = side² = 6² = 36
One face area of pyramid = bh/2 = (6 * 7)/2 = 21 cm²
Lateral surface area of pyramid = 4 * 21 = 84 cm²
Surface area = (5 * 36) + (84) = 264 cm²
Therefore surface area of given figure = 264 cm²
