Question 47 2 pts For Questions 47-49. please use the following information: Benzodiazepine is able to increase GABA production and thus is a depressant that may influence your responses to the environment. Assume you are designing a study to investigate if the 24-hour waiting time is sufficiently long before people can drive safely after have taken 2 mg/day of benzodiazepine for 2 days. You plan to enroll two groups of people. One is the control group that has not taken any medicines. The other group of people had taken 2 mg/day of benzodiazepine for 2 days and waited 24 hours after the last time they took the benzodiazepine. You plan to ask all these people to play with a driving simulator and then compare the accident rate by using either a Fisher's exact test or a Chi-squared test. The expected accident rate for the control group is 0.01. The power to detect a difference of 0.001 in the accidence rate is 80%. The alpha is set to 0.05. If y f you choose to calculate a 1-tailed P value (it might not be the right choice), what is the c? O 11.7 9.75 O 7.8 10.5 O 6.2 Question 48 3 pts For Questions 47-49, please use the following information: Benzodiazepine is able to increase GABA production and thus is a depressant that may influence your responses to the environment. Assume you are designing a study to investigate if the 24-hour waiting time is sufficiently long before people can drive safely after have taken 2 mg/day of benzodiazepine for 2 days. You plan to enroll two groups of people. One is the control group that has not taken any medicines. The other group of people had taken 2 mg/day of benzodiazepine for 2 days and waited 24 hours after the last time they took the benzodiazepine. You plan to ask all these people to play with a driving simulator and then compare the accident rate by using either a Fisher's exact test or a Chi-squared test. The expected accident rate for the control group is 0.01. The power to detect a difference of 0.001 in the accidence rate is 80%. The alpha is set to 0.05. At least how many people do you have to enroll in each group? 163800 None of the numbers in other choices is correct. 162081 O 146793 148200 Question 49 1 pts For Questions 47-49, please use the following information: Benzodiazepine is able to increase GABA production and thus is a depressant that may influence your responses to the environment. Assume you are designing a study to investigate if the 24-hour waiting time is sufficiently long before people can drive safely after have taken 2 mg/day of benzodiazepine for 2 days. You plan to enroll two groups of people. One is the control group that has not taken any medicines. The other group of people had taken 2 mg/day of benzodiazepine for 2 days and waited 24 hours after the last time they took the benzodiazepine. You plan to ask all these people to play with a driving simulator and then compare the accident rate by using either a Fisher's exact test or a Chi-squared test. The expected accident rate for the control group is 0.01. The power to detect a difference of 0.001 in the accidence rate is 80%. The alpha is set to 0.05. If you enrolled more people in each group than the number you got from Q49, what would happen? The power would be higher than 90% The specificity would be higher than 80% The actual power would be higher than 80% The sensitivity would be higher than 95% Question 47 2 pts For Questions 47-49. please use the following information: Benzodiazepine is able to increase GABA production and thus is a depressant that may influence your responses to the environment. Assume you are designing a study to investigate if the 24-hour waiting time is sufficiently long before people can drive safely after have taken 2 mg/day of benzodiazepine for 2 days. You plan to enroll two groups of people. One is the control group that has not taken any medicines. The other group of people had taken 2 mg/day of benzodiazepine for 2 days and waited 24 hours after the last time they took the benzodiazepine. You plan to ask all these people to play with a driving simulator and then compare the accident rate by using either a Fisher's exact test or a Chi-squared test. The expected accident rate for the control group is 0.01. The power to detect a difference of 0.001 in the accidence rate is 80%. The alpha is set to 0.05. If y f you choose to calculate a 1-tailed P value (it might not be the right choice), what is the c? O 11.7 9.75 O 7.8 10.5 O 6.2 Question 48 3 pts For Questions 47-49, please use the following information: Benzodiazepine is able to increase GABA production and thus is a depressant that may influence your responses to the environment. Assume you are designing a study to investigate if the 24-hour waiting time is sufficiently long before people can drive safely after have taken 2 mg/day of benzodiazepine for 2 days. You plan to enroll two groups of people. One is the control group that has not taken any medicines. The other group of people had taken 2 mg/day of benzodiazepine for 2 days and waited 24 hours after the last time they took the benzodiazepine. You plan to ask all these people to play with a driving simulator and then compare the accident rate by using either a Fisher's exact test or a Chi-squared test. The expected accident rate for the control group is 0.01. The power to detect a difference of 0.001 in the accidence rate is 80%. The alpha is set to 0.05. At least how many people do you have to enroll in each group? 163800 None of the numbers in other choices is correct. 162081 O 146793 148200 Question 49 1 pts For Questions 47-49, please use the following information: Benzodiazepine is able to increase GABA production and thus is a depressant that may influence your responses to the environment. Assume you are designing a study to investigate if the 24-hour waiting time is sufficiently long before people can drive safely after have taken 2 mg/day of benzodiazepine for 2 days. You plan to enroll two groups of people. One is the control group that has not taken any medicines. The other group of people had taken 2 mg/day of benzodiazepine for 2 days and waited 24 hours after the last time they took the benzodiazepine. You plan to ask all these people to play with a driving simulator and then compare the accident rate by using either a Fisher's exact test or a Chi-squared test. The expected accident rate for the control group is 0.01. The power to detect a difference of 0.001 in the accidence rate is 80%. The alpha is set to 0.05. If you enrolled more people in each group than the number you got from Q49, what would happen? The power would be higher than 90% The specificity would be higher than 80% The actual power would be higher than 80% The sensitivity would be higher than 95%