The right-hand "tail" of the standard normal curve can be defined as the part that lies at least 2 standard deviations to the right of the mean. The left-hand
"tail" can be defined as the part that lies at least 2 standard deviations to the
left of the mean.
According to the empirical rule, approximately what percentage of the area
under the whole curve is in the two tails? (Hint: Find the percentage for each
tail individually.) Round your answer to the nearest tenth.
A. 5%
B. 2.5%
C. 16%
D. 32%
SURAT

solution:

we have to construct

∠m nt ≅ ∠p qr

the steps to draw this construction are

step 1: use a compass to draw an arc from point q which intersects the side pq at point a and the side qr at point b.

step 2: draw a segment nt and use the same width of the compass to draw an arc from point n which intersects the segment nt at a point x.

step 3:

step 4: join points n and y using a straightedge.

step 3:

option (d).maintaining the same width of the compass as ab, draw an arc from point x such that it intersects the arc drawn from n in a point y.

to draw   congruent angles , 1. width of compasses while drawing two angles should be same i.e from point at which angle has to be drawn, 2.the distance between the two points where the compass intersects the two sides should be same while drawing any two congruent angles.

the square root of 16 is 4.

4*4 = 16

we can set up an equation to find the girls' ages. the equation is         28=0.5x-5+x. (comment if you need me to explain how i got this equation.) so, you add x and 0.5x to get 1.5x and add 5 to each side. your new equation is 33=1.5x. now divide both sides of the equation by 1.5 to get 22=x. because x is mary's age, to find jasmine's age we subtract mary's age from 28. we find that mary is 22 years old and jasmine is 6 years old.