Question

A study is run to estimate the mean Systolic Blood Pressure
level in adults 60 to 80 years of age. A sample of 10 participants
is selected and their Systolic Blood Pressure levels are measured
as follows.

125 135 160 146 135 140 154 170 110 140

Compute Quartiles 1 and 3

Q1=135 and Q2= 152 |
||

Q1=152 and Q2=135 |
||

Q1=125 and Q2=160 |
||

a and b |

Answer #1

First arrange the data in increasing order.

110, 125, 135, 135, 140, 140, 146, 154, 160, 170

n = number of observations = 10 which is even.

Median = average of (n/2)th and (n/2)+1 th observation

= average of 5th and 6th observation

= (140+140)/2

= 140

**Median = 140**

Lower half of data is {110, 125, 135, 135, 140}

Upper half of data is {140, 146, 154, 160, 170}

Q1 is nothing but the median of lower half of data.

Q1 = median of {110, 125, 135, 135, 140}

= 135

**Q1 = 135**

Q3 is nothing but the median of upper half of data

Q3 = median of {140, 146, 154, 160, 170}

= 154

**Q3 = 154**

.

The systolic blood pressure of adults in the USA is nearly
normally distributed with a mean of 121 millimeters of mercury
(mmHg) and standard deviation of 17.
Someone qualifies as having Stage 2 high blood pressure if their
systolic blood pressure is 160 or higher. Stage 1 high BP is
specified as systolic BP between 140 and 160.
Give your answers rounded to 4 decimal places.
a. What is the probability that an adult in the USA has stage 2...

The systolic blood pressure of adults in the USA is nearly
normally distributed with a mean of 122 and a standard deviation of
19.
Someone qualifies as having Stage 2 high blood pressure if their
systolic blood pressure is 160 or higher.
(a) Around what percentage of adults in the USA have stage 2
high blood pressure? Give your answer rounded to two decimal
places.
____%
(b) Stage 1 high BP is specified as systolic BP between 140 and
160....

The systolic blood pressure of adults in the USA is nearly
normally distributed with a mean of 119 and standard deviation of
26 . Someone qualifies as having Stage 2 high blood pressure if
their systolic blood pressure is 160 or higher. (a) Around what
percentage of adults in the USA have stage 2 high blood pressure?
Give your answer rounded to two decimal places. % (b) Stage 1 high
BP is specified as systolic BP between 140 and 160....

The systolic blood pressure of adults in the USA is nearly
normally distributed with a mean of 121 and standard deviation of
25 . Someone qualies as having Stage 2 high blood pressure if their
systolic blood pressure is 160 or higher. (a) Around what
percentage of adults in the USA have stage 2 high blood pressure?
Give your answer rounded to two decimal places. % (b) Stage 1 high
BP is specied as systolic BP between 140 and 160....

The systolic blood pressure of adults in the USA is nearly
normally distributed with a mean of 118 and standard deviation of
17 . Someone qualifies as having Stage 2 high blood pressure if
their systolic blood pressure is 160 or higher. a. Around what
percentage of adults in the USA have stage 2 high blood pressure?
Give your answer rounded to two decimal places. % b. If you sampled
2000 people, how many would you expect to have BP>...

The systolic blood pressure of adults in the USA is nearly
normally distributed with a mean of 122 and standard deviation of
23 . Someone qualifies as having Stage 2 high blood pressure if
their systolic blood pressure is 160 or higher. a. Around what
percentage of adults in the USA have stage 2 high blood pressure?
Give your answer rounded to two decimal places. %
b. If you sampled 2000 people, how many would you expect to have
BP>...

The systolic blood pressure of adults in the USA is nearly
normally distributed with a mean of 117 and standard deviation of
16 .
Someone qualifies as having Stage 2 high blood pressure if their
systolic blood pressure is 160 or higher.
a. Around what percentage of adults in the USA have stage 2 high
blood pressure? Give your answer rounded to two decimal
places.
%
b. If you sampled 2000 people, how many would you expect to have
BP>...

The systolic blood pressure of adults in the USA is nearly
normally distributed with a mean of 121 and standard deviation of
20 . Someone qualifies as having Stage 2 high blood pressure if
their systolic blood pressure is 160 or higher.
a. Around what percentage of adults in the USA have stage 2 high
blood pressure? Give your answer rounded to two decimal places.
%
b. If you sampled 2000 people, how many would you expect to have
BP>...

The systolic blood pressure of adults in the USA is nearly
normally distributed with a mean of 119 and standard deviation of
24 .
Someone qualifies as having Stage 2 high blood pressure if their
systolic blood pressure is 160 or higher.
a. Around what percentage of adults in the USA have stage 2 high
blood pressure? Give your answer rounded to two decimal
places.
%
b. If you sampled 2000 people, how many would you expect to have
BP>...

The systolic blood pressure of adults in the USA is nearly
normally distributed with a mean of 119 and standard deviation of
22 .
Someone qualifies as having Stage 2 high blood pressure if their
systolic blood pressure is 160 or higher.
a. Around what percentage of adults in the USA have stage 2 high
blood pressure? Give your answer rounded to two decimal
places.
%
b. If you sampled 2000 people, how many would you expect to have
BP>...

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