Summer 2ul Friday, July 13 1:00 pm -2:00 pm (Closed) Problem 1. (50) (a) Find al

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Summer 2ul Friday, July 13 1:00 pm -2:00 pm (Closed) Problem 1. (50) (a) Find all instant centers for the following mechanism at the position shown Use the instant centers to determine the primary kinematic coefficients hs and he. coefficient associated with relative velocity of each pin center labelled A and B with respect to the slot. Show the velocity vectors at each pin 3 Determine the kinematic 2 center (b) Determine the mechanical advantage of A (a) and (b) the mechanism. Use I cm 1 cm in Parts oling contact Rolling contact

Explanation / Answer

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3. Randomization is a method based on chance by which the participants are assigned for treatment.It minimizes the differences among groups by equally distributing people with particular characteristics among all the trial arms. The researchers do not know which treatment is better.it is completely based on biasness. So yes randomization is used. The units includes analysis of the study which is testing of blood pressure,electrolytes(Ca,K,Na)in blood and urine&cholestrol

4.methods of resarch control:test the efficacy and feasibility of the K-DASH education intervention and reasearchers used a pre-post intervention evaluation design and a purposive sample of 30 KAs with HBP.

The validity and equivalence of the K-DASH were assessed through a series of groups composed of bilingual researchers, clinicians, and KA participants and their family members.

dietary results showed insufficient intake of micronutrients, especially fiber, vitamin C, folate, calcium, and potassium.so instrucred them to follow dietary plan with more fibre ,vegatebles and fruits.

5. history could not be a threat to the internal validity of this study if proper diet and exercises on daily basis are followed.

6.Attrition occurs when cases are lost from a sample over time or over a series of sequential processes. So in this case there is no attrition.

7.yes ,mortality could be a threat in this case study as the bp levels showed a decrease in systolic and diastolic pressures,urine pottasium levels increased,LDL levels also showed an increase which results in heart diseases,hyperkalemia,atherosclerosis etc.

8. YES,the threat of maturation is relevant in this study.

9.Internal validity refers to how well an experiment is done.In this study internal validity is done well but tests included can be more to detect the hypertension levels and diet intake explanation should be explained well to the participants.

10. Construct validity refers to whether test measures the construct  adequately,all the measures taken in this study are quite adequate and enough.no threats in construct validity

11.External validity is the validity of general research, usually based on experiments as experimental validity.

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