dr. donaldson is studying 18 - 20 year - olds at the local university. he wanted to determine the mean…

dr. donaldson is studying 18 - 20 year - olds at the local university. he wanted to determine the mean (average) number of hours of sleep they get each night. he randomly surveyed 200 students and determined that the mean number of hours of sleep each night was 6 hours. describe the population, sample, population parameters, and sample statistics. identify the population in the given problem. choose the correct answer below. a. the 200 students surveyed b. all students at the local university c. all 18 - 20 year olds in america d. all 18 - 20 year olds at the local university identify the sample for the given problem. choose the correct answer below. a. the 200 students surveyed b. 6 hours c. the mean number of hours of sleep received by 18 - 20 year - olds at the local university d. all 18 - 20 year - olds at the local university identify the population parameter in the given study. choose the correct answer below. a. 6 hours b. the mean number of hours of sleep received by 18 - 20 year - olds at the local university c. the 200 students surveyed d. all 18 - 20 year - olds at the local university identify the sample statistic. choose the correct answer below. a. the 200 students surveyed b. all 18 - 20 year - olds at the local university c. 6 hours d. the mean number of hours of sleep received by 18 - 20 year - olds at the local university

dr. donaldson is studying 18 - 20 year - olds at the local university. he wanted to determine the mean (average) number of hours of sleep they get each night. he randomly surveyed 200 students and determined that the mean number of hours of sleep each night was 6 hours. describe the population, sample, population parameters, and sample statistics. identify the population in the given problem. choose the correct answer below. a. the 200 students surveyed b. all students at the local university c. all 18 - 20 year olds in america d. all 18 - 20 year olds at the local university identify the sample for the given problem. choose the correct answer below. a. the 200 students surveyed b. 6 hours c. the mean number of hours of sleep received by 18 - 20 year - olds at the local university d. all 18 - 20 year - olds at the local university identify the population parameter in the given study. choose the correct answer below. a. 6 hours b. the mean number of hours of sleep received by 18 - 20 year - olds at the local university c. the 200 students surveyed d. all 18 - 20 year - olds at the local university identify the sample statistic. choose the correct answer below. a. the 200 students surveyed b. all 18 - 20 year - olds at the local university c. 6 hours d. the mean number of hours of sleep received by 18 - 20 year - olds at the local university

Answer

Brief Explanations:

  1. Population is the entire group of interest. Here, Dr. Donaldson is interested in 18 - 20 year - olds at the local university, so that's the population.
  2. Sample is a subset of the population that is actually studied. The 200 students surveyed are the sample.
  3. Population parameter is a characteristic of the population. The mean number of hours of sleep for all 18 - 20 year - olds at the local university is the population parameter.
  4. Sample statistic is a characteristic of the sample. The mean number of hours of sleep (6 hours) for the 200 surveyed students is the sample statistic.

Answer:

  1. D. all 18 - 20 year olds at the local university
  2. A. the 200 students surveyed
  3. B. the mean number of hours of sleep received by 18 - 20 year - olds at the local university
  4. C. 6 hours