(Solved): ion 7 In a study conducted by the World Health Organisation (WHO), the systolic blood pressure of 1 ...

ion 7 In a study conducted by the World Health Organisation (WHO), the systolic blood pressure of 120 adults (measured in mm $\mathrm{mg}$ ) were found to be normally distributed with a mean of 128.4 and a variance of 285.61 . In the same study, the diastolic blood pressure of the adults was also found to be normally distributod with a mean of $82.3\mathrm{mmHg}$ and a standard deviation of $14.2\mathrm{mmHg}$. The follow 1. The percentage of systollc measuremonts that fall within the "Prehypertension" classification rango. is [a] $\%$. 1i. The probability that an adult presents with a systolic measurement of at most 136 is [b] iii. The probablity that an adult prosents wath a diastolic measurement greater than 75 , is [c] W. The middle $50\%$ of the systolic measurements aro between $[\mathrm{d}]\mathrm{mmH}g$ and $[\mathrm{e}]\mathrm{mm}\mathrm{Hg}$ respectively.