An astronomer is studying four stars. Star B is 5 times farther from Earth than Star A. Star C is 1000 time farther from Earth than Star B. Star D is 100 times farther from Earth than Star C. The astronomer finds that Star D is 3.4 x 10^19 miles from Earth. How far is Star A from Earth?

Assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq between 80 and 120.assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq between 80 and 120.