If two fair coins (normal coins) are thrown, what os the probability that they both land on the same side ( both heads or both tails .justify youer respons

1/4 or 0.25

Step-by-step explanation:

The possibility of flipping 1 head/tail is 1/2 so to find the possibility for flipping 2 heads/tails you multiply 1/2 x 1/2 which is 1/4 or 0.25.

alot

step-by-step explanation:

its a wood chuck that can chuck wood

irst, find the z score of a score of 80. this is given by the formula z = (x-u)/o, where x is the score, u is the mean, and o is the standard deviation. this gives

z = (80-78)/12 = 1/6 = .1667

now, find what percentile a z score of 1/6 correlates to in the normal distribution.

a z score of 1/6 = .1667 is equivalent to the 56.36th percentile of the distribution. so the probability a score is over this is 1-.5636 = .4364

the mean of a sample mean is equal to the original mean. however, the standard deviation of a sample mean is equal to the original standard deviation divided by the square root of n (sample size). so the new standard deviation is 12/sqrt(16) = 3.

the new z score is 80-78/3 = 2/3 = .667. this is equivalent to the 74.86th percentile. so the probability that the mean will be greater than this score is 1-.7486 = .2514.