This topic contains a solution. Click here to go to the answer
« previous next »
Pages: 1 2  All   Go Down

Author Question: A researcher wants to test the hypothesis that alcohol reduces driver's reaction time. On a closed ... (Read 390 times)

Beheh

  • Hero Member
  • *****
  • Posts: 520
Reply #10 on: Jun 15, 2020
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?
Elementary Statistics in Criminal Justice Research ¦ Fox, Levin, Forde ¦ 4th Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

C.mcnichol98

  • Sr. Member
  • ****
  • Posts: 314
Reply #11 on: Jun 15, 2020
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.


Pages: 1 2  All   Go Up
« previous next »
 

Did you know?

Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.

Did you know?

The effects of organophosphate poisoning are referred to by using the abbreviations “SLUD” or “SLUDGE,” It stands for: salivation, lacrimation, urination, defecation, GI upset, and emesis.

Did you know?

During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

Did you know?

Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.

Did you know?

The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.

Condensation reaction Condensation reaction
When young infants hold objects for a long period of time they eventually become habituated to them. When young infants hold objects for a long period of time they eventually become habituated to them.
Carbonyl groups reaction type Carbonyl groups reaction type
The glycogen synthase reaction The glycogen synthase reaction
Cylinder Power Balance Test Cylinder Power Balance Test
Lab: Mass Relationships in Chemical Reaction Lab: Mass Relationships in Chemical Reaction
Video: Morphology of a tomato plant

For a complete list of videos, visit our video library