Question

1. Veterinarians often use nonsteriodal anti-inflammatory drugs to treat lameness in horses. A group of veterinary researchers wanted to find out how widespread the practice was in the United States. They obtained a list of all veterinarians treating large animals, including horses. They sent questionaires to all the veterinarians on the list. Such a survey is called a census. The response rate was 40%. What is the population of interest? A. Population of interest is all veterinarians treating large animals. B. The population of all veterinarians in the United States treating large animals, including horses. C. The population of interest is all veterinarians. D. All of the answer choices are correct. 2. Researchers have noted that children who learn to play a musical instrument through taking lessons have higher average SAT scores, higher average GPA and higher average class rank. The various measures of academic success described are examples of: A. confounding variables B. Response variables C. None of the answer choices is correct D. Explanatory variables 3. Each month, the census bureau mails survey forms to 250,000 households asking questions about the people living in the household and about such things as motor vehicles and housing costs. Telephone calls are made to households that don't return the form. In one month, responses were obtained from 240,000 of the households contacted. If the household does not return the form and cannot be contacted by telephone, this is: A. undercoverage B. Simple random sampling C. volunteer bias D. nonresponse

Answer 1

Here by the problem,

1. Veterinarians often use nonsteriodal anti-inflammatory drugs to treat lameness in horses. A group of veterinary researchers wanted to find out how widespread the practice was in the United States. They obtained a list of all veterinarians treating large animals, including horses. They sent questionaires to all the veterinarians on the list. Such a survey is called a census. The response rate was 40%. So here the population of interest be,

The population of all veterinarians in the United States treating large animals, including horses.

Hence option B is the correct one.

2. Researchers have noted that children who learn to play a musical instrument through taking lessons have higher average SAT scores, higher average GPA and higher average class rank. The various measures of academic success described are examples of:

Response variables as they are considered being influenced by the fact of learning musical instrument

Hence option B is the correct one.

3. Each month, the census bureau mails survey forms to 250,000 households asking questions about the people living in the household and about such things as motor vehicles and housing costs. Telephone calls are made to households that don't return the form. In one month, responses were obtained from 240,000 of the households contacted. If the household does not return the form and cannot be contacted by telephone, this is:

Nonresponse bias, as those households are unable to be represented in sample.

Hence option D is the correct one.

Hence the answer................

Thank you................