Question

According to the WHO MONICA Project the mean blood pressure for people in China is 128...

According to the WHO MONICA Project the mean blood pressure for people in China is 128 mmHg with a standard deviation of 23 mmHg (Kuulasmaa, Hense & Tolonen, 1998). Blood pressure is normally distributed.

  1. State the random variable.

Blood pressure for people in China

  1. Suppose a sample of size 15 is taken. State the shape of the distribution of the sample mean.
  2. Suppose a sample of size 15 is taken. State the mean of the sample mean.
  3. Suppose a sample of size 15 is taken. State the standard deviation of the sample mean.
  4. Suppose a sample of size 15 is taken. Find the probability that the sample mean blood pressure is more than 135 mmHg.
  5. Would it be unusual to find a sample mean of 15 people in China of more than 135 mmHg? Why or why not?
  6. If you did find a sample mean for 15 people in China to be more than 135 mmHg, what might you conclude?
Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Systolic blood pressure (SBP) in healthy US adults is normally distributed with mean 116 mmHg [2]...
Systolic blood pressure (SBP) in healthy US adults is normally distributed with mean 116 mmHg [2] and standard deviation 10 mmHg. Suppose that you select repeated samples of size 15 from this population and calculate the mean for each sample. a) if you were to select a large number of random samples, each size 15, what would be the mean of the samples mean? b) what would be the standard deviation of these sample means? what is another name for...
A company medical director failed to find significant evidence that the mean blood pressure of a...
A company medical director failed to find significant evidence that the mean blood pressure of a population of executives differed from the national mean µ = 128. The medical director now wonders if the test used would detect an important difference if one were present. For a random sample of size 72 from a normal population of executive blood pressures with standard deviation σ = 15, the z statistic is z = (¯x − 128)/(15/ √ 72) The two-sided test...
In the early 1900s, nutritionists believed people who ate no meat had lower blood pressure. In...
In the early 1900s, nutritionists believed people who ate no meat had lower blood pressure. In the population of all Americans, the average systolic blood pressure of 121.2 mmHg. You decide to test this by selecting 10 vegetarians; the sample had an average systolic blood pressure of 116.3 mmHg, with a standard deviation of 3.2. What is the observed test statistic?
The mean of diastolic blood pressure (DBP) level for Americans to be 72.0 mmHg. The estimated...
The mean of diastolic blood pressure (DBP) level for Americans to be 72.0 mmHg. The estimated standard deviation was approximately 10.3 mmHg. Using these estimates as mean and standard deviation for the American population, consider the sampling distribution of sample means based on a sample size of 40 drawn. a) What would the proportion of sample mean levels of DBP 55.0 mmHg or lower? b) What would the proportion of sample mean levels of DBP 85.0 mmHg or higher? c)...
The mean diastolic blood pressure for a random sample of 90 people was 81 millimeters of...
The mean diastolic blood pressure for a random sample of 90 people was 81 millimeters of mercury. If the standard deviation of individual blood pressure readings is known to be 11 millimeters of mercury, find a 95% confidence interval for the true mean diastolic blood pressure of all people. (upper and lower) Round to three decimal places.
Suppose that diastolic blood pressure readings of adult males have a bell-shaped distribution with a mean...
Suppose that diastolic blood pressure readings of adult males have a bell-shaped distribution with a mean of 80 mmHg and a standard deviation of 11 mmHg. Using the empirical rule, what percentage of adult males have diastolic blood pressure readings that are greater than 102 mmHg?
The mean diastolic blood pressure for a random sample of 60 people was 84 millimeters of...
The mean diastolic blood pressure for a random sample of 60 people was 84 millimeters of mercury. If the standard deviation of individual blood pressure readings is known to be 10 millimeters of mercury, find a 90% confidence interval for the true mean diastolic blood pressure of all people. Then complete the table below. What is the lower limit of the 90% confidence interval? What is the upper limit of the 90% confidence interval?
Suppose people's systolic blood pressure were normally distributed with mean 130 mmHg and standard deviation 5...
Suppose people's systolic blood pressure were normally distributed with mean 130 mmHg and standard deviation 5 mmHg. Using the approximate EMPIRICAL RULE about what percentage of heights would be BETWEEN 120 and 140 mmHg? Suppose people's systolic blood pressure were normally distributed with mean 130 mmHg and standard deviation 5 mmHg. Using the approximate EMPIRICAL RULE about what percentage of heights would be BELOW 140 mmHg ? Suppose baseball batting averages were normally distributed with mean 250 and standard deviation...
Suppose the systolic blood pressure of young adults is normally distributed with mean 120 and standard...
Suppose the systolic blood pressure of young adults is normally distributed with mean 120 and standard deviation 11. (a) Find the 77th percentile of this distribution. (b) Find the probability that a random young adult has systolic blood pressure above 135. (c) Find the probability that a random young adult has systolic blood pressure within 3.3 standard deviations of the mean. (d) Suppose you take a sample of 8 young adults and measure their average systolic blood pressure. Carefully jus-...
A population has a mean of 239 and a standard deviation of 128. If a sample...
A population has a mean of 239 and a standard deviation of 128. If a sample of size 6 is taken, what is the probability the sample mean is less than 288.1? Enter your answer as a decimal to 3 decimal places. A population has a mean of 474 and a standard deviation of 125. If a sample of size 8 is taken, what is the probability the sample mean is less than 536.4? Enter your answer as a decimal...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT