Answer:
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 variable of interest of a population, and for this case we know the following conditions
Where 
and 
And for this case we select a sample size of n= 15. and we want to know the distribution for the sample mean 
. We can assume that the distribution for is approximately normal and given by:
Asuming that the distribution for X is also approximately normal. So then the parameters are:
Answer:
8.5 × 10^5
Step-by-step explanation:
Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the 10. If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.
That means there are:
1,130 females
&
1,370 males.
Answer:
min=12, q1=13, median=17, q3=21, max=22
Step-by-step explanation:
Answer:
Trinomial
Step-by-step explanation:
we know that
A polynomial can be classified by its number of terms.
A polynomial with one term is called monomial, a polynomial with two terms is called a binomial, and a polynomial with three terms is called a trinomial
In this problem we have
This polynomial has three terms
therefore
Is a trinomial
