Question The scores on a test given to all juniors in a school district are normally distributed with a
mean of 72 and a standard deviation of 6.
Find the probability that a randomly chosen junior has a score below 72.
The percent of juniors whose score is at or below the mean is 68
%.

0.16 or 16%

step-by-step explanation:

lets take a coin for example.

if you toss it twice, it has a 1/4 chance of landing on heads both times because 1/2 * 1/2 is 1/4.

with the cards, the chance of picking dog is 0.4. having two people pick one is like picking a card twice in a row. so 0.4 * 0.4 is 0.16, or 16%

so a parallelogram is just like a square base times height. multiply 40 and 39 to get 1560 inches.

a triangle is base times height divided by two. so multiply 7.9 and 5 and then divide it by 2 to get 19.75inches.

the kite can be split into two separate triangles and added together to get the total area. 30 x 4 /2 which equals 60. make sure to double it for the two triangles making 120.

you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.