Reaction Time for a Group of People Is Normally Distributed

question 5

Multiple Choice

Reaction time for a group of people is normally distributed, with a mean of 0.9 seconds and a standard deviation of 0.1 seconds. Find the probability that an individual selected at random has a reaction time less than 1 second. Round your answer to four decimal places. ​

• A)0.3413
• B)0.6587
• C)0.1587
• D)0.8413
• E)0.6826

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Definitions:

First-Order Reaction

A chemical reaction where the rate depends linearly on the concentration of one reactant.

Zero-Order Reaction

a chemical reaction in which the rate is independent of the concentration of the reactant(s).

Cocaine

A powerful stimulant drug derived from the leaves of the coca plant, used medically as a local anesthetic and often abused for its euphoric effects.

First Order

In kinetics, refers to a reaction where the rate is proportional to the concentration of one reactant.