A researcher wishes to determine if a high protein diet changes the HDL cholesteral level. The average HDL cholesterol is 57 mg/dL. She conducts a hypothesis test and has the following results:
z = 3.2227
P = 0.00125
Interpret the p-value.
Interpretation of p - value:
p - Value is the probability of getting results as extreme as the one found in the sample assuming that the average HDL cholesterol is 57 mg/dL.
A researcher wishes to determine if a high protein diet changes the HDL cholesteral level. The...
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...
A medical researcher wishes to see if he can lower the cholesterol levels through diet in 6 people by showing a film about the effects of high cholesterol levels. The data are shown. At -0.01, did the cholesterol level decrease on average? Use the P-value method and tables Patient 1 2 345 6 Before240 211 209 216 207219 After228 208196 194 205 214
A researcher aims to test a hypothesis that average LDL cholesterol level is greater among diabetic adults that have HIV in Chicago compared to Chicago diabetic adults who don't have HIV. The average LDL cholesterol level among diabetic patients in Chicago who don't have HIV is 150 mg/dL. She is considering a design with a sample with 150 randomly chosen adult diabetic patients with HIV in chicago and a level of significance at 0.05. She wants to calculate the statistical...
3. A health researcher in a hospital believes that the mean cholesterol level for certain male population aged-50 is 241. An investigator wishes to examine whether the cholesterol levels are significantly reduced by modifying diet. A random sample of 12 patients agrees to participate in the study and follow the modified diet for 3 months. After 3 months, their cholesterol levels are measured. The mean cholesterol level in the sample is 235 with a standard deviation of 12.5. Based on...
A researcher wishes to determine whether there is a difference in the average age of middle school, high school, and college teachers. Teachers are randomly selected. Their ages are recorded below. Test the hypothesis that there is no difference in the average age of each group. Use a -0.01. Middle School Teachers High School Teachers College Teachers tet 938 Find the p-value. 0.1142 0.2284 2.5166 8.9678
4. A researcher wishes to determine whether people with high blood pressure can reduce their blood pressure by following a particular diet. The sample data is shown below, where Hs represents the mean blood pressure of the treatment group and u, represents the mean for the control group significance level of 0.01 and whichever method you deem appropriate (p-value method, critical value . Use a method, or confidence interval method) to test the claim that the diet reduces the blood...
Please show all work.
Use the following information for questions 1-10: A researcher is creating a new treatment protocol for Myelodysplastic Syndrome (MDS), a form of preleukemia. Following the old treatment protocol, 32% of patients with MDS will develop leukemia within 5 years of MDS diagnosis. He believes his new treatment protocol will lead to fewer MDS patients developing leukemia. He takes a random sample of 100 individuals on his new treatment protocol. Of these 100 individuals, 27 develop leukemia...
1) (7 points) An investigator hypothesizes that educating parents on proper nutrition and exercise will reduce the total cholesterol level of children. A sample of 20 children between the ages of ten to fifteen have agreed to have their total cholesterol level measured for this study. Suppose the investigator wishes to run a hypothesis test at a 5% level of significance. a) (1 point) What is the outcome variable? Is this outcome variable considered to be continuous or dichotomous? b)...
A researcher is interested in how diet affects athletic performance. She instructs one group of participants to consume a high protein diet, a second group to consume a low sugar diet, and a third group to not change their diet at all (to eat as they normally would) for 3 weeks. She compares the amount of time it takes participants in each group to run one mile. 1. What is the null hypothesis? A. H0: µ1 = µ2 =µ3 B....
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