8 percent of all city A residents are known to have abnormal blood pressure requiring some...

8 percent of all city A residents are known to have abnormal blood pressure requiring some form of medication (give answers to 4 places past decimal)

1. What is the sampling distribution for the sample proportion of citizens requiring medication ina. random sample of 550 people.

Normal Mean:

Standard Deviation:

2. What is the probability that the sample proportion requiring medication, in the random sample of part (1) above, is greater than 10%?

3. What is the minimum sample size necessary for the sample proportion of citizens requiring medication to be approximately normal?

Solutions

Expert Solution

orchestra answered 11 months ago

Next > < Previous

Related Solutions

In one population, it is found that 6% of all people have high blood pressure and...

In one population, it is found that 6% of all people have high blood pressure and 40% are overweight. Four percent suffer from both con- ditions. What is the probability that a randomly selected person from this population will have high blood pressure given that he is not over- weight? Please explain :)

High blood pressure is known as the silent killer; why is this an appropriate name? In...

High blood pressure is known as the silent killer; why is this an appropriate name? In your answer, explain how blood pressure is measured and what readings indicate that your pressure is high. How can this condition be improved or prevented? What is blood pressure? How is it measured? Why is it a useful indicator of cardiovascular health? Let's have another great week of discussions!

Suppose it is known that in a certain population the mean systolic blood pressure (SBP) is...

Suppose it is known that in a certain population the mean systolic blood pressure (SBP) is 120 mmHg and the standard deviation is 10 mmHg. In a random sample of size 40 from this population, what is the probability that this sample will have a mean SBP greater than 124 mmHg?

Of all people in one population, 21% have high blood pressure and 36% are overweight. In...

Of all people in one population, 21% have high blood pressure and 36% are overweight. In addition, 42% of people who are overweight also have high blood pressure. Let H represent the event that a person has high blood pressure, and O represent the event that a person is overweight. In each part of this question, you must first express each probability in terms of the events H and O and justify any computation through the use of a formula....

One with a systolic blood pressure greater than 129 is considered to have high blood pressure....

One with a systolic blood pressure greater than 129 is considered to have high blood pressure. A study recorded the systolic blood pressures of 14 randomly selected Americans, which yielded a mean of 131.57 with standard deviation 15.88. Conduct a hypothesis test to see if you can say that Americans, on average, have high blood pressure. 1.Write the hypotheses for this test. 2.What is the test statistic? 3.What is the p-value? 4.Using α = 0.05, decide whether or not to...

The health commissioner of city B postulated that the mean diastolic blood pressure (DBP) in a...

The health commissioner of city B postulated that the mean diastolic blood pressure (DBP) in a population of patients diagnosed as hypertensive was 100 mm Hg. Wishing to test this null hypothesis, a random sample of 11 subjects was drawn from this target population. The results were as follows (DBP in mm Hg): 96, 114, 125, 105, 97, 96, 131, 117, 107, 111, 123 Assume the sample was drawn from a normally distributed population. a) Use α = 0.05 (two-tailed)...

Not all marathons are the same. Some have challenging hills, weather, and competition. Others are known...

Not all marathons are the same. Some have challenging hills, weather, and competition. Others are known for being a "fast" course or "downhill." Finishing any marathon is a challenge. Let's compare two marathons from recent years using z-scores and the normal distribution. Data from marathonguide.com. Marathon #1: Mt. Lemmon, AZ Marathon #2: Los Angeles, CA mean finish time: 4.344.34 hours standard deviation: 0.850.85 hour N=421N=421 mean finish time: 5.3155.315 hours standard deviation: 1.18031.1803hour N=21626N=21626 1. What can we conclude from the...

What are some physiological mechanism to control blood pressure Name different blood buffers and their functions...

What are some physiological mechanism to control blood pressure Name different blood buffers and their functions Acid-base balance mechanism 1st and 2nd line of mechanism What are the effects of hydrogen ions on contractile proteins What are sources of hydrogen ions during exercise What is Hb-O2 affinity

2(c) The mean monthly household expenses of all residents in a large city is RM1250 with...

2(c) The mean monthly household expenses of all residents in a large city is RM1250 with a standard deviation of RM225. However the population distribution of household expenses is skewed to the right. Calculate the mean and standard deviation of ?̅ and describe the shape of its sampling distribution when the sample size is (i) 30; [6 marks] (ii) 100; [6 marks] (iii) sketch distribution graphs for the above scenarios. [8 marks]

1. Some countries have inflation around or in excess of 8 percent. Suppose that the sacrifice...

1. Some countries have inflation around or in excess of 8 percent. Suppose that the sacrifice ratio is 2.5. What is the cost of reducing inflation from 8 percent to 2 percent? In your answer, define the sacrifice ratio and explain how you found the cost of inflation reduction. 2. Why does a downward-sloping Phillips curve imply a positive sacrifice ratio? 3. Suppose that the economy is at an inflation rate such that unemployment is above the natural rate. How...

Subjects