The product of two negative rational numbers is
2 answers:
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Answer:
A student have to score 1.28 standard deviations above the mean o be publicly recognized.
Step-by-step explanation:
If , then
, is a standard normal variate with mean, E (<em>Z</em>) = 0 and Var (<em>Z</em>) = 1. That is,
.
The distribution of these <em>z</em>-variates is known as the standard normal distribution.
In statistics, a standardized score is the number of standard deviations an observation or data point is above the mean.
Thus, <em>z</em>-scores are a type of standardized scores.
It is provided that the students who score in the top 13 percent in the National Financial Capability Challenge Exam are recognized publicly for their achievement by the Department of the Treasury.
Let <em>x</em> be score of the top 13%.
So, to be are recognized publicly for their achievement by the Department of the Treasury the probability of score <em>x</em> must be:
P (X < x) = 0.90
⇒ P (Z < z) = 0.90
The value of <em>z</em> for the above probability is:
<em>z </em>= 1.28
*Use a <em>z</em>-table.
Thus, a student have to score 1.28 standard deviations above the mean o be publicly recognized.
A reflex angle is equal to the sum of 180 degreesand any of the primaryangles (acute, right andobtuse angles). Therefore, Reflex angle = 180° + Acute angle.
First, make sure that it is the reflex angle you’re being asked to measure! Lots of children mistakenly, but very carefully measure the wrong angle. Usually, the angle you’re being asked to measure will have a little circle drawn around the point to show you which side needs measuring
2. Make a small mark on your paper to show where 180° is. If you want to, you could even draw a faint line to show the 180° line.
3.You now need to measure the remainder. Using the outside scale on your protractor, measure the angle from the 180° line you have drawn to the second line you have been given (in this case y to x).
4. Add together 180° to the second measurement and this will be your reflex angle.
5. If you want to check your answer, measure the inside angle and check that the two measurements added together equal 360°.
