One hundred and fifty people were surveyed and asked if they believed in UFOs, ghosts and bigfoot43 believed in UFOs44 believed in ghosts25 believed in bigfoot10 believed in UFOs and ghosts8 believed in ghosts and bigfoot5 believed in UFOs and bigfoot2 believed in all three. Q: Using Venn Diagram find how many people surveyed believed in at least one of these things.

i use my brain for prombles like this maybe you could try it

step-by-step explanation:

answer: i believe the answer is e

step-by-step explanation:

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.