Answer:
Let X the random variable that represent the heights of a population, and for this case we know the distribution for X is given by:
Where
and
Since the distribution for X is normal then the we know that the distribution for the sample mean
is given by:
And the standard error is given by:

Step-by-step explanation:
Previous concepts
Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".
The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".
Solution to the problem
Let X the random variable that represent the heights of a population, and for this case we know the distribution for X is given by:
Where
and
Since the distribution for X is normal then the we know that the distribution for the sample mean
is given by:
And the standard error is given by:

Answer:
8
Step-by-step explanation:
2 divide 1/4 = 
What we have to do here is find a common denominator for both fractions, in this case 4, and change to equivalent fractions with a denominator of 4.
Then we divide across. The denominator of the answer will be 1 because the denominators are the same. Divide the numerators and get 8 ÷ 1, wich is just 8.
Write the equation of the line parallel to y=2x-5 and passes through the point (2,4). Please help ... We must have slope m=2, and we need to find b the y-intercept. ... b is the y intercept when x=0. Let's plug in the point (2,4) to find b. ... ˆ ˜ ° − ± ÷ ⁄ × ƒ ∫ ∑ ∞ √ ∼ ≅ ≈ ≠ ≡ ∈ ∉ ∋ ∏ ∧ ∨ ¬ ∩ ∪ ∂ ∀ ∃
Answer:
Yes, Every Quadrilateral do have 2 matching angle. It is one of the main feature of quadrilateral.
Step-by-step explanation: