1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
laila [671]
3 years ago
13

Use the empirical rule to solve the problem. the systolic blood pressure of 18-year-old women is normally distributed with a mea

n of 120 mmhg and a standard deviation of 12 mmhg. what percentage of 18-year-old women have a systolic blood pressure between 96 mmhg and 144 mmhg

Biology
2 answers:
slava [35]3 years ago
6 0
First you need to determine how much standard deviation the range is. 
120+12*x= 96
x= 96-120/ 12= -2

120+12*y=144
y= 144-120/12= +2

Systolic blood pressure between 96 mmHg and 144 mmHg means that the blood pressure is at -2SD to +2SD. The Z-score for -2SD is 0.0228 and +2SD is 0.9772
So the percentage would be: 0.9772- 0.0228  * 100%= 95.44%
ollegr [7]3 years ago
5 0

Answer:

is the 30 % of the population

Explanation:

If the Standard deviation is 12 mmHg, that mean that 1 SD up and down from the average value will be:

Up: 120 + 12 = 132 mmHg

Down: 120 - 12 = 108 mmHg

If we continue calculating the second standard deviation, will be:

Up: 132 + 12 = 144 mmHg

Down: 108 - 12 = 96 mmHg

This calculation represent that the values are 2 SD apart from the avegare, and if we check the graphic, in a normal distribution, will mean that the percentage of the women in this pressure blood situation will be 30 %, 15 % to the smaller value and 15 % to the bigger value.

Hope this info is useful.

You might be interested in
When two species have a very
Nesterboy [21]

Answer:

i say competition

Explanation:

i say competition because they are the same so they might fight alot for resources

3 0
3 years ago
How is it possible for us to have a genetic disease that your grandparents had/have but our parents never had it?
dolphi86 [110]

Answer:because they where still somehow related to you

Explanation:

5 0
3 years ago
Read 2 more answers
In fruit flies, the gene for red eyes (R) is dominant and the gene for sepia eyes (r) is recessive. If a red-eyed heterozygous f
alex41 [277]

Answer:

Rr and rr

Explanation:

assumeing that a punnet sqaure in use. a 2 by 2 tabel shows each combination. and combos with a dominant gene allways inherits the dominant trait with a chance to pass off to the next offspring

4 0
2 years ago
Read 2 more answers
Which of the fallowing describes the difference between nitrogen-14 and nitrogen-15
Tasya [4]
Nitrogen-14 has a mass number of 14 which means that it has a total of 14 protons and neutrons. When you subtract the atomic number of nitrogen from the mass number of 14 you get the number of neutrons (14-7), which gives you 7 neutrons. Now for nitrogen-15, you have a different mass number which means there is a different amount of neutrons (15-7), 8 neutrons. So the difference is the mass numbers and the number of neutrons (the number of protons remains the same however). When there are two versions of the same element, and they have the same number of protons, but different number of neutrons and different mass numbers, they are called isotopes. Hope this helped :)
4 0
2 years ago
Read 2 more answers
Leaves of green plants contain openings known as stomata. These are opened and closed by specialized cells that allow gases to b
liubo4ka [24]

Answer:

b carbon dioxide moves in; oxygen moves out.

Explanation:

  • The green leaves of the plant convert the available solar energy into chemical energy by the process of photosynthesis which s responsible for giving green pigment to the leaves.
  • The stomata present on the leaves are used for exchanging gases, they give out oxygen and take or absorb carbon gas. As carbon dioxide is exalted by animals and is taken by plants.
5 0
3 years ago
Other questions:
  • Stable ecosystems can be altered, either rapidly or slowly, through which of the following events?
    6·1 answer
  • Explain hypertonic, hypotonic, and isotonic.<br> pls and thanks
    6·1 answer
  • In a certain plant, tall stems (t) are dominant to short stems (t). a farmer crosses a short-stemmed plant with a heterozygous l
    5·1 answer
  • When water is distilled, any solutes dissolved in the water are left behind. Is distilled water hypertonic or hypotonic compared
    7·1 answer
  • The graph shows how much it costs to feed enough dairy cattle to produce 100 pounds of milk in two different places which statem
    10·2 answers
  • All but one of the girl's traits are determined by her chromosomes. that is
    14·2 answers
  • What does "chemical composition" mean when speaking of minerals and rocks?
    11·1 answer
  • I need help!
    11·2 answers
  • What happens if a person has one dominant gene and one recessive gene for the same trait in his or her DNA?
    5·2 answers
  • PLS HELP WILL GIVE 50 PONITS+ MARK BRAINLYEST IF DO What has developed as a result of population growth around Cape Canaveral du
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!