Will eating oatmeal promote healthy levels of cholesterol? A consumer reports analyst took a sample of...
Will eating oatmeal promote healthy levels of cholesterol? A consumer reports analyst took a sample of 31 people with high cholesterol and asked them to eat oatmeal once a day for 3 months. Measurements were taken of their cholesterol levels before and after the 3 months in mg/dl. The analyst is testing whether the cholesterol levels after the diet are less than the cholesterol levels before the diet. The hypotheses for this test are as follows: Null Hypothesis: μD ≥ 0, Alternative Hypothesis: μD < 0. If the analyst calculated the mean difference in cholesterol levels (after - before) to be 1.34 mg/dL with a standard deviation of 5.03 md/dL, what is the test statistic and p-value for the paired hypothesis t-test? Question 9 options: 1) Test Statistic: -1.483, P-Value: 0.926 2) Test Statistic: -1.483, P-Value: 0.074 3) Test Statistic: 1.483, P-Value: 0.926 4) Test Statistic: 1.483, P-Value: 0.074 5) Test Statistic: 1.483, P-Value: 1.852
Homework Answers
4th option is correctAdd Answer to:
Will eating oatmeal promote healthy levels of cholesterol? A
consumer reports analyst took a sample of...
2) A researcher for a cereal company wanted to demonstrate the health benefits of eating oatmeal....
2) A researcher for a cereal company wanted to demonstrate the health benefits of eating oatmeal. A sample of 9 volunteers was obtained and each participant ate a fixed diet without any oatmeal for 30 days. At the end of the 30-day period, cholesterol was measured for each individual. Then the participants began a second 30-day period in which they repeated exactly the same diet except that they added 2 cups of oatmeal each day. After the second 30-day period,...
The average cholesterol level for Americans is 176 mg/dL. A researcher wishes to determine whether eating...
The average cholesterol level for Americans is 176 mg/dL. A researcher wishes to determine whether eating a vegetarian diet can reduce cholesterol. She randomly selects 81 vegetarians and finds that there average cholesterol is 123.43 mg/dL with a standard deviation of 42.67 mg/dL. Is there enough evidence to suggest that a vegetarian diet can reduce cholesterol? Find the test statistic and the P-value. Test Statistic: Round your answer to two decimal places P < Use the table and round your...
The following table contains cholesterol levels collected from non-smoking males. The before cholesterol level is before...
The following table contains cholesterol levels collected from
non-smoking males. The before cholesterol level is before they
exercised, and the after cholesterol level was taken after the same
subject regularly exercised for two months. It is claimed that the
mean cholesterol level before exercise is greater than that after
exercise. Assume that the population of cholesterol level
difference (before-after) is normally distributed. Test the claim
at the 0.01 level.
Cholesterol Before
176
163
169
169
166
182
Cholesterol After
181...
A new drug to treat high cholesterol is being tested by pharmaceutical company. The cholesterol levels...
A new drug to treat high cholesterol is being tested by pharmaceutical company. The cholesterol levels for 21 patients were recorded before administering the drug and after. The 90% confidence interval for the true mean difference in total cholesterol levels (after - before) was (14.93, 45.35). Which of the following is the appropriate conclusion? 1) We are 90% confident that the average difference in cholesterol levels is positive, with the higher cholesterol levels being after the drug regimen. 2) We...
In a test of the effectiveness of garlic for lowering cholesterol, 36 subjects were treated with...
In a test of the effectiveness of garlic for lowering cholesterol, 36 subjects were treated with raw garlic. Cholesterol levels were measured before and after the treatment. The changes (before minus after) in their levels of LDL cholesterol (in mg/dL) have a mean of 0.6 and a standard deviation of 23.5. Use a 0.05 significance level to test the claim that with garlic treatment, the mean change in LDL cholesterol is greater than 0. What do the results suggest about...
Question Help In a test of the effectiveness of garlic for lowering cholesterol, 49 subjects were...
Question Help In a test of the effectiveness of garlic for lowering cholesterol, 49 subjects were treated with raw garlic. Cholesterol levels were measured before and after the treatment. The changes (before minus after) in their levels of LDL cholesterol (in mg/dL) have a mean of 0.8 and a standard deviation of 24.3. Use a 0.10 significance level to test the claim that with garlic treatment, the mean change in LDL cholesterol is greater than 0. What do the results...
A researcher wanted to evaluate the effect of diet and exercise on blood cholesterol levels. To...
A researcher wanted to evaluate the effect of diet and exercise on blood cholesterol levels. To do so, he randomly selected fifteen adult males between the ages of 30 and 55. The total cholesterol was measured in each subject initially and then three months after participating in an aerobic exercise program and switching to a low-fat diet. What type of hypothesis test should be done with the data? McNemar's test Paired t-test for two means (Matched-pairs) Standard -test for 2...
In a test of the effectiveness of garlic for lowering cholesterol, 81 subjects were treated with...
In a test of the effectiveness of garlic for lowering cholesterol, 81 subjects were treated with raw garlic Cholesterol levels were measured before and after the treatment. The changes (before minus after) in their levels of LDL cholesterol (in mg/dL) have a mean of 0.7 and a standard deviation of 24.8. Use a 0.05 significance level to test the claim that with garlic treatment, the mean change in LDL cholesterol is greater than 0. What do the results suggest about...
A pediatrician was surprised to find many of her young patients had blood cholesterol levels over...
A pediatrician was surprised to find many of her young patients had blood cholesterol levels over 5 mmol/L, indicating an increased risk of coronary artery disease. She took a random sample of 30 such patients to take part in a special nutritional program designed to lower blood cholesterol. Ten weeks after the program started, she measured the cholesterol levels of each of the 30 patients again. a. With the before and after program data for each of 30 patients on...
The cholesterol levels of adult males are approximately normally distributed with a mean of 224 mg/dl,...
The cholesterol levels of adult males are approximately normally distributed with a mean of 224 mg/dl, and a variance, o', of 521. Some researchers claim that the variance of cholesterol levels of adult males is less than 521. A sample of 15 adult males' blood tests had a mean of 222.5 mg/dL and a variance of 192. Is there enough evidence to conclude, at the 0.05 level of significance, that the variance of cholesterol levels of adult males is less...
The following table contains cholesterol levels collected from
non-smoking males. The before cholesterol level is before they
exercised, and the after cholesterol level was taken after the same
subject regularly exercised for two months. It is claimed that the
mean cholesterol level before exercise is greater than that after
exercise. Assume that the population of cholesterol level
difference (before-after) is normally distributed. Test the claim
at the 0.01 level.
Cholesterol Before
176
163
169
169
166
182
Cholesterol After
181...
In a test of the effectiveness of garlic for lowering cholesterol, 36 subjects were treated with raw garlic. Cholesterol levels were measured before and after the treatment. The changes (before minus after) in their levels of LDL cholesterol (in mg/dL) have a mean of 0.6 and a standard deviation of 23.5. Use a 0.05 significance level to test the claim that with garlic treatment, the mean change in LDL cholesterol is greater than 0. What do the results suggest about...
Question Help In a test of the effectiveness of garlic for lowering cholesterol, 49 subjects were treated with raw garlic. Cholesterol levels were measured before and after the treatment. The changes (before minus after) in their levels of LDL cholesterol (in mg/dL) have a mean of 0.8 and a standard deviation of 24.3. Use a 0.10 significance level to test the claim that with garlic treatment, the mean change in LDL cholesterol is greater than 0. What do the results...
A researcher wanted to evaluate the effect of diet and exercise on blood cholesterol levels. To do so, he randomly selected fifteen adult males between the ages of 30 and 55. The total cholesterol was measured in each subject initially and then three months after participating in an aerobic exercise program and switching to a low-fat diet. What type of hypothesis test should be done with the data? McNemar's test Paired t-test for two means (Matched-pairs) Standard -test for 2...
In a test of the effectiveness of garlic for lowering cholesterol, 81 subjects were treated with raw garlic Cholesterol levels were measured before and after the treatment. The changes (before minus after) in their levels of LDL cholesterol (in mg/dL) have a mean of 0.7 and a standard deviation of 24.8. Use a 0.05 significance level to test the claim that with garlic treatment, the mean change in LDL cholesterol is greater than 0. What do the results suggest about...
A pediatrician was surprised to find many of her young patients had blood cholesterol levels over 5 mmol/L, indicating an increased risk of coronary artery disease. She took a random sample of 30 such patients to take part in a special nutritional program designed to lower blood cholesterol. Ten weeks after the program started, she measured the cholesterol levels of each of the 30 patients again. a. With the before and after program data for each of 30 patients on...
The cholesterol levels of adult males are approximately normally distributed with a mean of 224 mg/dl, and a variance, o', of 521. Some researchers claim that the variance of cholesterol levels of adult males is less than 521. A sample of 15 adult males' blood tests had a mean of 222.5 mg/dL and a variance of 192. Is there enough evidence to conclude, at the 0.05 level of significance, that the variance of cholesterol levels of adult males is less...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 11 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 11 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 11 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 11 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 11 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 11 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 11 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 11 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 11 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 11 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 11 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 11 months ago