No there is no statistically significant difference

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34. A study is run comparing HDL cholesterol levels between men who exercise regularly and those who do not. The data are shown below.Regular ExerciseNMeanStd DevYes3548.512.5No12056.911.9
35. Suppose a hypertension trial is mounted and 18 participants are randomly assigned to one of the comparison treatments. Each participant takes the assigned medication and his or her systolic blood pressure is recorded after 6 months on the assigned treatment. The data are as follows. Standard TreatmentPlaceboNew Treatment124134114111143117133148121125142124128150122115160128Is there a difference in mean systolic blood pressure among treatments? Run the appropriate test at α = 0.05.
36. A study is designed to investigate whether there is a difference in response to various treatments in patients with Rheumatoid arthritis. The outcome is the patient’s self-reported effect of treatment. The data are shown below. Is there a significant difference in effect of treatment? Run the test at a 5% level of significance. SymptomsWorsenedNo EffectSymptomsImprovedTotalTreatment 122141450Treatment 214152150Treatment 39122950
37. Using the data below, suppose we focus on the proportions of patients who show improvement. Is there a statistically significant difference in the proportions of patients who show improvement between treatments 1 and 2. Run the test at a 5% level of significance.SymptomsWorsenedNo EffectSymptomsImprovedTotalTreatment 122141450Treatment 214152150Treatment 39122950
38. An analysis is conducted to compare mean time to pain relief (measured in minutes) under four competing treatment regimens. Summary statistics on the four treatments are shown below.TreatmentSample SizeMean Time to ReliefSample VarianceA533.817.7B527.015.5C550.89.7D539.616.8Complete the following ANOVA Table.Source ofVariationSSdfMSFBetween Groups 1524.4 3508.132.186Within Groups3719.4816232.4675Total: 5243.881939. A small pilot study is conducted to investigate the effect of a nutritional supplement on total body weight. Six participants agree to take the nutritional supplement. To assess its effect on body weight, weights are measured before starting the supplementation and then after 6 weeks. The data are shown below. Is there a significant increase in body weight following supplementation? Run the test at a 5% levelof significance. SubjectInitial WeightWeight after 6 Weeks
115515721421453176180418017552102096125126No.40. A small pilot study is run to compare a new drug for chronic pain to one that is currently available.

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