Age N mean Sderror SD

{18-39, 7676 ,115, 0.2, 17.52 }

{40-59, 5826 ,123, 0.2 ,22.90}

{ 60+ 6419, 136, 0.5, 40.06}

the data was collected on 19,921

Assuming that the populations these samples are drawn from are

normally distributed, which seems reasonable given the figures in

the paper,

1) what are the median and mode for each age-group

population?.

2)Hypertension is diagnosed when a persons systolic blood

pressure is greater than 140 mm Hg. To find the proportion of

individuals in each population who have hypertension, we need to

convert 140 to a z-score.

a)Which formula from the chapter would be appropriate?

b)Would the standard deviation or standard error be used?.

3) Without doing any calculation, how will the proportion that

would be diagnosed as hypertensive be different for each age group

population?

a)Which age group will have the largest proportion that is

hypertensive?

b)Which age group will have the smallest proportion that is

hypertensive?

Find the proportion of each population that has

hypertension:

a)What proportion of the population aged 18-39 has

hypertension?

b)What proportion of the population aged 40-59 has

hypertension?

c)What proportion of the population aged 60 and over has

hypertension?

What does the larger variability for the oldest age group

suggest about the health of the population?

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