Using a calculator, you should get a sample standard deviation of approximately 2.5 hours
If you want to find the standard deviation by hand, you need to do the following steps
- Find the mean mu
- Subtract each data value from the mean to get (x-mu)
- Square each result from step 2, so we now have (x-mu)^2
- Add up each square from the previous step
- Divide that result over n-1. In this case n = 14 is the sample size. This computes the sample variance.
- Finally, apply the square root to get the sample standard deviation.
The teacher data set has a sample standard deviation of roughly 2.5 hours; compare this with the sample standard deviation of the students 1.9 hours, and we see that the teacher data set is more spread out. The larger the standard deviation is, the more spread out the data set will be.
Answer I would recommend would be D) All non-negative integers less than or equal to 150
Id choose this because in this context the most people than can go are 150 or less.
Answer:
40x40/2 = 800
Step-by-step explanation:
step 1: 40x40= 1600
step 2: 1600/2=800
done
also did your father went out to get milk?
Two pairs of corresponding angles are congruent, so the triangles are similar.
The correct option is (A).
<h3> What is similarity in triangles?</h3>
Two triangles are similar if they have the same ratio of corresponding sides and equal pair of corresponding angles.
As, the measurement of two angles are equal.
So, the angles are congruent.
Hence, by AA criteria the triangles are similar.
Learn more about similarity here:
brainly.com/question/25882965
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