Mathematics

Mathematics, 29.08.2019 02:30, aleexandras09

Amedical study involving senior citizens was designed to determine the relationship between the amount of salt in the diet and blood pressure. what are the independent and dependent variables for this study? a. the independent variable is blood pressure, and the dependent variable is amount of salt in the diet. b. the independent variable is the age of the senior citizens, and the dependent variable is blood pressure. c. the independent variable is blood pressure, and the dependent variable is the age of the senior citizens. d. the independent variable is the amount of salt in the diet, and the dependent variable is blood pressure.

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Biology, 06.07.2019 07:00, xeno777

9) blood pressure results from the force of blood fluids pressing against the walls of blood vessels. hypertension, or high blood pressure, is often caused by a constriction of the blood vessels by fatty deposits in artery walls. however, another cause of high blood pressure can be the intake of too much sodium in foods and table salt. why would too much salt intake cause someone to develop high blood pressure? a) salt in the bloodstream causes fluids to enter the blood from surrounding cells, due to osmosis. b) salt in the bloodstream causes fluids in the blood to leave and go to surrounding cells, due to osmosis. c) people that take in too much salt will drink more water to balance out the salt, which raises blood pressure. d) extra salt solidifies in the bloodstream and blocks the blood vessels, causing them to narrow, and blood pressure to go up.

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Mathematics, 27.09.2019 02:30, datboyjulio21

In a study of the effects of diet on blood pressure, one group of 85 people followed a vegetarian diet for 4 months, after which time their mean systolic blood pressure was 15 mm hg lower than at the start. another group of 75 people followed a nonvegetarian diet for the same length of time, after which their mean systolic blood pressure was 1 mm hg lower. if a vegetarian diet had no effect on blood pressure, there would be less than 1 chance in a 100 of getting these results. which statement is valid based on these results? a) the difference in the sample size of the two groups makes a conclusion impossible. b) the recommended diet for lower blood pressure is nonvegetarian. c) the result is not practically significance. d) the result is not statistically significant.

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Health, 07.10.2019 16:30, SmokeyRN

Can a vegetarian or low-salt diet reduce blood pressure? men with high blood pressure are assigned at random to one of four diets: (1) normal diet with unrestricted salt; (2) vegetarian with unrestricted salt; (3) normal with restricted salt; and (4) vegetarian with restricted salt. this experiment has one factor, the type of diet. two factors, high blood pressure and type of diet. two factors, normal/vegetarian diet and unrestricted/restricted salt. three factors, men, high blood pressure, and type of diet. four factors, the four diets being compared.

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Mathematics, 07.10.2019 18:30, MickeyAppleX

In the us, one-third of all adults have high blood pressure and two-thirds of all senior citizens have high blood pressure. 17% of all americans are senior citizens. if an american adult is selected at random find the probability that the person a. does not have high blood pressure. round your answer to two decimal places. b. has high blood pressure given that the person is a senior citizen. round your answer to two decimal places. c. is a senior citizen with high blood pressure. round your answer to two decimal places. d. is a senior citizen given that the person has high blood pressure. round your answer to two decimal places.

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