2. Which of the following experimental designs has a subject independent variable? a. Researchers assign recovering alcoholics to two different rehabilitation programs and record the number of times they use alcohol over a one year period. b. The short term memory capabilities of athletes with 3 or more concussions are compared to athletes with no history of concussions. c. One university implements a mandatory face mask policy while another does not, and the campuses observe the rate of infection for a contagious disease over several months. d. Researchers tell participants to do different types of impossible tasks (i.e. find an object that is not present) and record how long it takes for participants to discontinue.
2. Which of the following experimental designs has a subject independent variable? a. Researchers assign recovering alcoholics to two different rehabilitation programs and record the number of times they use alcohol over a one year period. b. The short term memory capabilities of athletes with 3 or more concussions are compared to athletes with no history of concussions. c. One university implements a mandatory face mask policy while another does not, and the campuses observe the rate of infection for a contagious disease over several months. d. Researchers tell participants to do different types of impossible tasks (i.e. find an object that is not present) and record how long it takes for participants to discontinue.
Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter2: Introduction To Spreadsheet Modeling
Section: Chapter Questions
Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...
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Question
![2.
Which of the following experimental designs has a subject independent variable?
a. Researchers assign recovering alcoholics to two different rehabilitation programs and record the
number of times they use alcohol over a one year period.
b. The short term memory capabilities of athletes with 3 or more concussions are compared to
athletes with no history of concussions.
c. One university implements a mandatory face mask policy while another does not, and the
campuses observe the rate of infection for a contagious disease over several months.
d. Researchers tell participants to do different types of impossible tasks (i.e. find an object that is
not present) and record how long it takes for participants to discontinue.
12. Which of the following hypotheses would be a bidirectional hypothesis?
a. Eating more carbohydrates each day will increase overall weight (lbs.) over time.
b. Temperatures over the next 100 years will increase across the planet
c. Taking Aspirin every day will reduce the chances of heart attack
d. Driving time in Chicago will be significantly different to driving time in New York City.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F50991731-0d15-4d35-8ca5-2e2c7d60ce07%2Faa02d923-fac0-41a4-9af3-ef9a9a490e13%2Fnaq341_processed.jpeg&w=3840&q=75)
Transcribed Image Text:2.
Which of the following experimental designs has a subject independent variable?
a. Researchers assign recovering alcoholics to two different rehabilitation programs and record the
number of times they use alcohol over a one year period.
b. The short term memory capabilities of athletes with 3 or more concussions are compared to
athletes with no history of concussions.
c. One university implements a mandatory face mask policy while another does not, and the
campuses observe the rate of infection for a contagious disease over several months.
d. Researchers tell participants to do different types of impossible tasks (i.e. find an object that is
not present) and record how long it takes for participants to discontinue.
12. Which of the following hypotheses would be a bidirectional hypothesis?
a. Eating more carbohydrates each day will increase overall weight (lbs.) over time.
b. Temperatures over the next 100 years will increase across the planet
c. Taking Aspirin every day will reduce the chances of heart attack
d. Driving time in Chicago will be significantly different to driving time in New York City.
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