In a recent study, the Centers for Disease Control and Prevention reported that diastolic blood pressures of adult women in the United States are approximately normally distributed with mean 80.5 and standard deviation 9.9.

For parts (a) and (c), make sure to draw a standard normal curve and shade the appropriate areas.

a) What proportion of women have blood pressures lower than 75?

b) Michelle’s diastolic blood pressure is in the 85th percentile of all adult women. What is her blood pressure?

c) If a group of 25 women is selected, what’s the probability that the mean diastolic blood pressure of these 25 women is lower than 75?

/is used for a fraction 1) if x = 2/3 and y = 3/4, what is the value of (x + y) (x/y) expressed as a common fraction? 2) what is the least positive integer greater than 1 that leaves a remainder of 1 when divided by each of 2, 3, 4, 5, 6, 7, 8, and 9? 3) the ponde family's powerjet pumps 420 gallons of water per hour. at this rate, how many gallons of water will it pump in 45 minutes? 4) kim's insurance company pays 80% of the cost of all prescription medication she purchases in a year beyond the first $250 worth of prescriptions. her prescriptions for this year cost a total of $570. how many dollars of this amounts will kim's insurance company pay?

2.5 milligrams is equivalent to how many grams

Can someone explain to me how to do