It is an irrational number
Answer:
1. true
2. False
3. False
4. True
Step-by-step explanation:
Answer:
And we can find this probability with this difference:
And in order to find these probabilities we can use tables for the normal standard distribution, excel or a calculator.
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 costs of services of a population, and for this case we know the distribution for X is given by:
Where
and
We are interested on this probability
And the best way to solve this problem is using the normal standard distribution and the z score given by:
If we apply this formula to our probability we got this:
And we can find this probability with this difference:
And in order to find these probabilities we can use tables for the normal standard distribution, excel or a calculator.
A hectare (ha) is the unit of area that can be used for that purpose.
It is roughly equivalent to 2.5 acres. It is equivalent in area to a square 100 m on a side. (10,000 m²).
Answer:
8.49
Step-by-step explanation:
Posted in the image due to lack of proper format.