The height of 16-month-old seedlings are normally distributed with a mean of 31.5 cm and standard deviation of 10 cm. What is the height above which 75% of the seedlings have grown?

Answer 1

hi, ok try using the z-score tables and find 0.75 and find the z-score that corresponds. use that with the formula. except you get one value and you need a range. im not sure????