Your company manufactures hot water heaters. the life spans of your product are known to be normally distributed with a mean of 13 years and a standard deviation of 1.5 years. what is the probability that the mean life span in a group of 10 randomly selected hot water heaters is between 12 and 15 years? (round to the nearest ten-thousandth.)

Look at arnold's attempt to solve the equation for b: 3b = 12 b = 3 · 12 b = 36 describe the mistake that arnold made.

Sum is 17 and their difference is 3

Consider this equation. |y + 6| = 2 what can be concluded of the equation? check all that apply. there will be one solution. there will be two solutions. the solution to –(y + 6) = 2 will be also be a solution to the given absolute value equation. the solution(s) will be the number(s) on the number line 2 units away from –6. the value of y must be positive since the variable is inside absolute value signs.