This topic contains a solution. Click here to go to the answer

Author Question: A researcher wants to test the hypothesis that alcohol reduces driver's reaction time. On a closed ... (Read 394 times)

Beheh

  • Hero Member
  • *****
  • Posts: 520
A researcher wants to test the hypothesis that alcohol reduces driver's reaction
time.  On a closed driving course, the researcher studies 50 drivers with alcohol in
their system and 50 drivers with no alcohol in their system, while measuring
reaction time in milliseconds.  The average reaction time for drivers with alcohol in
their system was 142 milliseconds with a standard deviation of 7.45. The average
reaction time with no alcohol in their system was 134 milliseconds with a standard
deviation of 6.81.

What are your conclusions about the null hypothesis?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

C.mcnichol98

  • Sr. Member
  • ****
  • Posts: 314
We are able to reject the null hypothesis. There appears to be a relationship between
having alcohol in one?s system and reaction time.  Drivers with alcohol in their systems
will have a slower reaction time than those with no alcohol in their systems.



 

Did you know?

Blood is approximately twice as thick as water because of the cells and other components found in it.

Did you know?

Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

Did you know?

Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.

Did you know?

All adverse reactions are commonly charted in red ink in the patient's record and usually are noted on the front of the chart. Failure to follow correct documentation procedures may result in malpractice lawsuits.

Did you know?

Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.

For a complete list of videos, visit our video library