Answer:
Step-by-step explanation:
In similar triangles, the corresponding sides will be in same ratio
As the ratio of corresponding sides are not proportion, these are not similar triangles
Answer:
intresting
Step-by-step explanation:
Answer:
What is the rest of the question?
Step-by-step explanation:
Answer:
And using a calculator, excel or the normal standard table we have that:
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 weights of a population, and for this case we know the distribution for X is given by:
Where and
They select a sample size of n=9 people.The distribution for the sample mean is given by:
And we want to find this probability:
In order to the helicopter can safely lift off. We can use the z score formula given by:
And using a calculator, excel or the normal standard table we have that:
May 18, 1998. i think this is the answer