Aneurologist is testing the effect of a drug on response time by injecting 100 rats with a unit does of the drug, subjecting each to neurological stimulus and recording its response time. the neurologist knows that the mean response time for rats not injected with the drug is 1.2 seconds. the mean of the 100 injected rats response times is 1.05 seconds with a sample standard deviation of 0.5 seconds. do you think that the drug has an effect on response time?

c. the runner should sprint as fast as possible to the finish line.

this disease is :

* endemic (present in a defined area that is a village)

* a bacterial infection (treated with antibiotic)

* communicable by contact (by the hands)

manu-porterage is the most common mode of transmission, it transmits germs from one individual to another via the hands. this concerns infections of exogenous origin.

endemic disease, or endemic disease, refers to a disease that is constantly present in a given population, often tied to a specific geographic origin, as opposed to a pandemic that is not a sporadic disease.

antibiotics are molecules that have the property of killing (bactericidal) or limiting the spread (bacteriostatic) of bacteria.