Answer:
A statistic is said to be unbiased if the mean of its sampling distribution is equal to the true value of the parameter being estimated.
Step-by-step explanation:
A parameter is a number that describes the population.
A statistic is a number that describes a sample.
A statistic used to estimate a parameter is unbiased if the mean of its sampling distribution is exactly equal to the true value of the parameter being estimated. For example, the mean of a sample is an unbiased estimate of the mean of the population from which the sample was drawn.
A statistic is biased if its expected value is not equal to the parameter.
Answer:
275 ft³
Step-by-step explanation:
Given the ratio of radii of 2 similar figures = a : b , then
ratio of volumes = a³ : b³
Here the ratio of radii = 5 : 2 , so
ratio of volumes = 5³ : 2³ = 125 : 8
Calculate the volume (V) of A using proportion
= 
= 
( cross- multiply )
V = 275 ft³
That is the volume of figure A = 275 ft³
Answer:
b and d
Step-by-step explanation:
3 + root 2 = 4.414...
30/root 19 = 6.882....
5.1 - (15/root 24) = 2.038....
4pi = 12.5663....
b and d
Your answer would be (4y+1)(y+6)
Answer:
4 minutes
Step-by-step explanation:
You would divide 100 by 25 which is 4
