ZuoTi.Pro
Question

The National Center for Health Statistics reports that the mean systolic blood pressure for males 35...

The National Center for Health Statistics reports that the mean systolic blood pressure for males 35 to 44 years of age is 128. Do the executives of a large company have a different mean blood pressure? We collect data on 72 executives and find X ¯ =126.07 and s = 15. For this test, we plan to use a significance level of 0.05.

1. State your null and alternative hypothesis.

2. What is the value of alpha?

3. Use your calculator to conduct the appropriate hypothesis test. Report your p-value, rounded to 3 decimal places.

4. Based on the p-value obtained in question 3, make a decision and interpret your results in context.

5. If you made an error with your decision, what type of error could you have made? What would this mean in context?

6. Explain the power of this test, in context.

math   Statistics-And-Probability   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

0 0
Add a comment
Know the answer?
Add Answer to:
The National Center for Health Statistics reports that the mean systolic blood pressure for males 35...
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. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • The National Center for Health Statistics reports that the mean systolic blood pressure for males 35...

    The National Center for Health Statistics reports that the mean systolic blood pressure for males 35 to 44 years of age is 128. Do the executives of a large company have a different mean blood pressure? We collect data on 72 executives and find x-bar=126.07 and s=15. For this test, we plan to use a significance level of 0.05. 1. State the null and alternative hypothesis. 2. What is the value of alpha? 3. Using a calculator, conduct the appropriate...

  • The National Center for Health Statistics reports that the mean systolic blood pressure for males 35...

    The National Center for Health Statistics reports that the mean systolic blood pressure for males 35 to 44 years of age is 128 mmHg and the standard deviation in this population is 15 mmHg. The medical director of a large company looks at the medical records of 72 executives in this age group and finds that the mean systolic blood pressure in this sample is x 126.07 mmHg. Find the power of a one sided test that the executives blood...

  • 1. The National Center for Health Statistics reports that the systolic blood pressure for males 35...

    1. The National Center for Health Statistics reports that the systolic blood pressure for males 35 to 44 years of age has a mean of 128. In a study of business executives, a random sample of 101 executives has a mean systolic blood pressure of 134 with a standard deviation of 25. Do the data suggest that the mean systolic blood pressure for business executives is higher than 128? Use a 5% significance level?

  • An investigator theorizes that people who exercise regularly will have mean systolic blood pressure levels that...

    An investigator theorizes that people who exercise regularly will have mean systolic blood pressure levels that are significantly different from those of people who do not participate in a regular exercise program. To test this idea, the investigator randomly assigns 21 subjects to an exercise program for 10 weeks and 21 subjects to a non-exercise comparison group. After ten weeks, the mean systolic blood pressure of subjects in the exercise group is 132 and the standard deviation is 10. After...

  • The systolic blood pressure (BP) of the women was measured in 2011 and in a follow-up...

    The systolic blood pressure (BP) of the women was measured in 2011 and in a follow-up in 2014. The researcher wants to know, if, on average, the systolic BP of the poorest women in 2014 is significantly greater than the systolic BP of the same cohort in 2011. 2011 - sample size = 104, mean = 115.04, standard deviation = 14.934, std error mean = 1.464 2014 - sample size = 104, mean = 127, standard deviation = 13.350, std...

  • A pharmaceutical company claims that its new drug reduces systolic blood pressure. The systolic blood pressure...

    A pharmaceutical company claims that its new drug reduces systolic blood pressure. The systolic blood pressure (in millimeters of mercury) for nine patients before taking the new drug and 2 hours after taking the drug are shown in the table below. Is there enough evidence to support the company's claim? Let d=(blood pressure before taking new drug)−(blood pressure after taking new drug). Use a significance level of α=0.1 for the test. Assume that the systolic blood pressure levels are normally...

  • A pharmaceutical company claims that its new drug reduces systolic blood pressure. The systolic blood pressure...

    A pharmaceutical company claims that its new drug reduces systolic blood pressure. The systolic blood pressure (in millimeters of mercury) for nine patients before taking the new drug and 2 hours after taking the drug are shown in the table below. Is there enough evidence to support the company's claim? Let d = (blood pressure before taking new drug)-(blood pressure after taking new drug). Use a significance level of a = 0.05 for the test. Assume that the systolic blood...

  • Loretta, who turns 91 this year, has heard that the mean systolic blood pressure among the...

    Loretta, who turns 91 this year, has heard that the mean systolic blood pressure among the elderly is 115 millimeters of mercury (mmHg), but she believes that the actual value is higher. She bases her belief on a recently reported study of 22 randomly selected, elderly adults. The sample mean systolic blood pressure of the adults in the study was 120 mmHg, and the sample standard deviation was 25 mmHg. Assume that the population of systolic blood pressures of elderly...

  • Researchers want to know if there is a correlation between BMI and systolic blood pressure in...

    Researchers want to know if there is a correlation between BMI and systolic blood pressure in males over 50. A random sample of 9 males is selected and their data is recorded below. a) Calculate the Pearson Correlation Coefficient for these two variables and b) test whether the correlation is significantly different from 0. Run the test at a 5% level of significance. Give each of the following for part b to receive full credit: 1) the appropriate null and...

  • Loretta, who turns 91 this year, has heard that the mean systolic blood pressure among the...

    Loretta, who turns 91 this year, has heard that the mean systolic blood pressure among the elderly is 115 millimeters of mercury (mmHg), but she believes that the actual value is higher. She bases her belief on a recently reported study of 15 randomly selected, elderly adults. The sample mean systolic blood pressure of the adults in the study was 129 mmHg, and the sample standard deviation was 24 mmHg. Assume that the population of systolic blood pressures of elderly...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT