211 Practice Quiz #2

Quiz 2 A03 Monday, October 7, 2024 10:36 AM 1. Examples of probability sampling include the following, except a. Cluster sampling b. Systematic sampling c. Stratified sampling d. Quota sampling 2. If a nurse is asking a group of patients in a waiting room about their frustration level, what sampling method is the nurse using? a. Quota sampling b. Systematic sampling c. Stratified sampling d. Convenience sampling 3. For a research study, we enroll 415 women who gave birth in the last year. They must be ages 18-40 and not currently pregnant. being pregnancy is an example of: a. Exclusion criteria b. Inclusion criteria c. Quantitative data d. Ordinal data 4. Which of the following best describes sampling error? a. The error that occurs because the sample was not randomly selected b. The difference between the sample statistic and the population parameter that occurs by chance c. The error that occurs because the sample size was too small d. The error that results from biased questions in a survey 5. The following strategies can reduce sampling error and sampling bias, except: a. Increasing the sample size b. Using random sampling techniques c. Only selecting participants who volunteer for the study d. Stratifying the sample to ensure key subgroups of the population are represented 6. Which of the following statements about the Central Limit Theorem is correct? a. The Central Limit Theorem will always apply regardless of the sample size b. The sampling distribution of the sample mean will become approximately normal as the sample size increases, regardless or the population's distribution. c. The Central Limit Theorem only applies if the population distribution is normal d. The sample mean and population mean will always be identical according to the Central Limit Theorem 7. A nurse at a pediatric health center has a hypothesis that video game playing is related to childhood obesity. The results of her studv support this hypothesis. She should: a. Reject the null b. Fail to reject the null c. Accept the null d. Re-run the analysis 8. You are doing a study to see if there is a relationship between fatty foods and weight. You use an alpha of 0.05, and the p-value is 0.09. you know this means a. There is a statistically significant relationship between eating fatty foods and weight b. There is no statistically significant relationship between eating fatty foods and weight c. There is a statistically significant difference between the two groups d. Re-run the analysis 9. Your chance of making a type I error is set by which of the following? a. The effect size b. The beta c. The power d. The alpha 10. In order for a statistic to be clinically significant, it must be statistically significant a. True b. false