4 The heights of students at the Mainland college are normally distributed with mean 148 cm and standard deviation 8 cm .
- The probability that a Mainland student chosen at random has a height less than \(h \mathrm {~cm}\) is 0.67 . Find the value of \(h\).
120 Mainland students are chosen at random. - Find the number of these students that would be expected to have a height within half a standard deviation of the mean.