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A study is conducted to test the hypothesis that people with glaucoma have higher than average...
a study is conducted to test the hypothesis that people with glaucoma have higher than average...
a study is conducted to test the hypothesis that people with glaucoma have higher than average blood pressure. the study includes 30 people with glaucoma whose mean bp is 140 mm hg with a standard deviation of 24mm hg. the distribution of sbp appears to be bell shaped. you need to construct a 95% confidence interval for the true mean sbp among people with glaucoma. to help you do so, answer each of the following questions. What is the standard...
Problem 3. According to a recent study the mean blood pressure for people in China is...
Problem 3. According to a recent study the mean blood pressure for people in China is 128 mmHg with a standard deviation of 23 mmHg. Assume that blood pressure is normally distributed. (b)Find the probability that a person in China has blood pressure of140 mmHg or more. (c)Find the probability that a person in China has blood pressure of 135 mmHg or less. Continuing with this problem, suppose now a sample of 15 people are chosen from the above normal distribution...
1. A study is conducted to test the hypothesis that a new drug is effective in...
1. A study is conducted to test the hypothesis that a new drug is effective in lowering blood pressure. Which of the following would be a type I error? Concluding the that the drug is effective when it is not effective Concluding the drug is not effective when it is effective Saying the null hypothesis is false None of the above 2. A study is conducted to see if there is a difference in the prevalence in smoking between male...
1. A recent study 50 people indicated that 52.4% of people vote. Test the Hypothesis at...
1. A recent study 50 people indicated that 52.4% of people vote. Test the Hypothesis at the a =.05 level that the proportion of people that vote is > 50% 2. A recent study of 25 people indicated that the mean body temperature was 98.2 with a calculated standard deviation of .62. Test the hypothesis at the a = .05 level that the mean body temperature is not equal to 98.6. Since we have a calculated standard deviation, we must...
Hypothesis test for the difference of population means: Z test A study conducted by the research...
Hypothesis test for the difference of population means: Z test A study conducted by the research department of a pharmaceutical company claims that the annual spending (per person) for prescription drugs for allergy relief, is greater than or equal to the annual spending (per person) for non-prescription allergy relief medicine, Hly. A health insurance company conducted an independent study and collected data from a random sample of 285 individuals for prescription allergy relief medicine. The sample mean is found to...
6.12 Margin of error and the confidence interval. A study of stress on the campus of...
6.12 Margin of error and the confidence interval. A study of stress on the campus of your university reported a mean stress level of 78 (on a 0 to 100 scale with a higher score indicating more stress) with a margin of error of 5 for 95% confidence. The study was based on a random sample of 64 undergraduates more e. The study w (a) Give the 95% confidence interval. (b) If you wanted 99% confidence for the same study,...
1. To estimate the mean triglyceride levels of people in West Palm Beach, a blood test...
1. To estimate the mean triglyceride levels of people in West Palm Beach, a blood test on 20 randomly selected people was conducted and yielded a mean triglyceride level of 200, with a standard deviation of 10. Construct a 95% confidence interval for the true average triglyceride level of people in West Palm Beach. Round your answer to three decimal places. (3 points) a. (218.868, 229.132) b. (214.967, 233.033) c. (219.741, 230.259) d. (195.320, 204.680)
7/ A study is conducted, using a 95% confident level Cl, and it is found the...
7/ A study is conducted, using a 95% confident level Cl, and it is found the mean is 100 with standard deviation of 15. Find the sample size needed so that the Margin of Error will be less than 0.1?
A health study reported that, in one country, systolic blood pressure readings have a mean of...
A health study reported that, in one country, systolic blood pressure readings have a mean of 120 and a standard deviation of 14. A reading above 140 is considered to be high blood pressure. Complete parts a through d below. a. What is the z-score for a blood pressure reading of 140?
PROBLEM 3 Scientists have conducted a study on coronary blood flow velocity 18 people. The obtained...
PROBLEM 3 Scientists have conducted a study on coronary blood flow velocity 18 people. The obtained results are as follows: 75, 77, 78, 77, 66, 77, 72, 69, 72, 72, 71, 69, 68, 64, 66, 62, 61,70 The values of that sample are modelled by a random variable which follows normal distribution Nu, σ2), where μ and σ are unknown. After a week scientists have again conducted this study on 12 different people and obtained a sample standard deviation equal...
1. A recent study 50 people indicated that 52.4% of people vote. Test the Hypothesis at the a =.05 level that the proportion of people that vote is > 50% 2. A recent study of 25 people indicated that the mean body temperature was 98.2 with a calculated standard deviation of .62. Test the hypothesis at the a = .05 level that the mean body temperature is not equal to 98.6. Since we have a calculated standard deviation, we must...
Hypothesis test for the difference of population means: Z test A study conducted by the research department of a pharmaceutical company claims that the annual spending (per person) for prescription drugs for allergy relief, is greater than or equal to the annual spending (per person) for non-prescription allergy relief medicine, Hly. A health insurance company conducted an independent study and collected data from a random sample of 285 individuals for prescription allergy relief medicine. The sample mean is found to...
6.12 Margin of error and the confidence interval. A study of stress on the campus of your university reported a mean stress level of 78 (on a 0 to 100 scale with a higher score indicating more stress) with a margin of error of 5 for 95% confidence. The study was based on a random sample of 64 undergraduates more e. The study w (a) Give the 95% confidence interval. (b) If you wanted 99% confidence for the same study,...
7/ A study is conducted, using a 95% confident level Cl, and it is found the mean is 100 with standard deviation of 15. Find the sample size needed so that the Margin of Error will be less than 0.1?
PROBLEM 3 Scientists have conducted a study on coronary blood flow velocity 18 people. The obtained results are as follows: 75, 77, 78, 77, 66, 77, 72, 69, 72, 72, 71, 69, 68, 64, 66, 62, 61,70 The values of that sample are modelled by a random variable which follows normal distribution Nu, σ2), where μ and σ are unknown. After a week scientists have again conducted this study on 12 different people and obtained a sample standard deviation equal...
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