PP 48-50 1.1 Definitions of Statistics, Probability, and Key Terms Use the follo
ID: 3043653 • Letter: P
Question
PP 48-50 1.1 Definitions of Statistics, Probability, and Key Terms Use the following information to answer the next five exercises. Studies are often done by pharmaceutical companies to determine the effectiveness of a treatment program Suppose that a new AIDS antibody rug is currently under study. It is given to patients once the AIDS symptoms have revealed themselves. Of interest is the average (mean) length of time in months patients live once they start the treatment. Two researchers each follow a different set of 40 patients with AIDS from the start of treatment until their deaths. The following data (in months) are collected. Researcher A 3: 4; 11: 15: 16; 17:22: 44; 37; 16: 14; 24; 25; 15;26: 27:33; 29:35, 44; 13: 21; 22: 10: 12:8:40: 32: 26; 27: 31; 34; 29; 17; 8; 24; 18; 47; 33; 34 3: 14; 11: 5; 16; 17; 28; 41: 31: 18: 14; 14: 26:25: 21; 22, 31:2:35:44:23; 21:21: 16: 12: 18; 41;22; 16; 25; 33: 34; 29: 13; 18: 24; 23;42: 33: 29 Determine what the key terms refer to in the example for Researcher A. 1. population 2. sample 3. parameter 4. statistic 5. variable Use the following information to answer the next seven exercises: Studies are often done by pharmaceutical companies to determine the effectiveness of a treatment program. Suppose that a new AIDS antibody drug is currently under study. It is given to patients once the AIDS symptoms have revealed themselves. Of interest is the average (mean) length of time in months patients live once starting the treatment. Two researchers each follow a different set of 40 AIDS patients from the start of treatment until their deaths. The following data (in months) are collected. Researcher A: 3 4; 11; 15; 16: 17:22; 44; 37;16; 14: 24; 25; 15: 26: 27; 33; 29; 35; 44; 13; 21: 22; 10; 12,8: 40; 32; 26; 27:31; 34; 29; 17; 8;24; 18; 47; 33: 34 Researcher B: 3; 14; 11; 5; 16: 17;28: 41: 31: 18: 14; 14; 26; 25: 21; 22; 31; 2; 35; 44; 23: 21; 21; 16; 12: 18; 41; 22; 16; 25; 33; 34; 29; 13; 18; 24; 23:42:33:29 17. Determine what the key term data refers to in the above example for Researcher A 18. List two reasons why the data may differ. 19. Can you tell if one researcher is correct and the other one is incogrect? Why? 20. Would you expect the data to be identical? Why or why not? 21. How might the researchers gather random data?Explanation / Answer
Please post 1 question per post:
Here' is the answer to the 1st question:
1. Population - Patients within whom AIDs symptoms have revealed the themselves
2. Sample- The set of 40 patients with AIDs from the start of treatments until
their deaths
3. Parameter - For the population ( i.e. all patients within whom symptons reveal, it is the average ( mean ) length of time in months patient live once they start
treatment
4. Statistic - For the sample of 40 patients , it is the average ( mean ) length of time in months patient live once they start
treatment
5. Variable - This is somehting which we are measuring for the population. Average (mean) length of time in months patients live once they start treatment
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