The Next Questions Are Based on the Following Information

question 22

Essay

The Next Questions Are Based On The Following Information:
An engineering research center claims that,through the use of a new computer control system,automobiles should achieve,on average,at least an additional 5 miles per gallon of gas.A random sample of 81 automobiles was used to evaluate this product.The sample mean increase in miles per gallon achieved was 4.5,and the sample standard deviation was 2.9 miles per gallon.
-Test the hypothesis at the 5% level.

---

Definitions:

Nuclear Receptor

A class of proteins within cells that, upon binding with a ligand, can act as transcription factors to regulate gene expression.

G Protein

A type of protein that acts as a molecular switch inside cells, involved in transmitting signals from stimuli outside the cell to its interior.

Neural Inhibition

A process in the nervous system where certain neurons suppress the activity of other neurons, helping to control and refine neural circuits.

Sympathetic Activity

Part of the autonomic nervous system that prepares the body for 'fight or flight' response by increasing heart rate, constricting blood vessels, and raising blood pressure.