Answer please with all parts

X Z = Manufacturing and selling drugs that claim to reduce an individual's cholesterol level is big business for drug companies. Drugs-R-Us, a pharmaceutical company, would like to market its new cholesterol drug. The cholesterol levels of American adult women are normally distributed with a mean of 185 mg/dL and a standard deviation of 24 mg/dL (a) Drugs-R-Us would like to market its drug to the women who have the highest cholesterol. 1 in 8 women have a cholesterol level above what value? [4 marks] ANSWER: (b) The cholesterol levels of the middle 75% of women are between what two values? [4 marks] ANSWER: (c) On average, men have higher cholesterol than women but the standard deviation is the same. Drugs-R-Us would like to market their new drug to men with the highest cholesterol. If 1 in 8 men have a cholesterol level above 220, what is the mean cholesterol level for men? [4]