9514 1404 393
Answer:
4
Step-by-step explanation:
The geometric mean of two numbers is the square root of their product.
√(8·2) = √16 = 4
The geometric mean of 8 and 2 is 4.
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The geometric mean of n numbers is the n-th root of their product.
The average of those two values is
(-11-4 +i+4i)/2 = -(15/2) +(5/2)i
A ratio is the quantitative relation between two amounts showing the number of times one value contains or is contained within the other.
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Answer:
The value of the test statistic is 
Step-by-step explanation:
The null hypothesis is:
The alternate hypotesis is:
Our test statistic is:
In which X is the sample mean, 
is the value tested at the null hypothesis, 
is the standard deviation(square roof of the variance) and n is the size of the sample.
In this problem, we have that:
So
The value of the test statistic is
You need to make a proportion. Then cross multiply and divide to find your answer.
blue 3 12
red 2 x
(2)(12) = 3x
24 = 3x
x = 8
There are 8 red marbles
