4.The amount of atmospheric radiation to which a person is exposed to while flying by jet across the country is considered a random variable with an approximate normal distribution. On a New York to Los Angeles flight, this distribution has an assumed mean of 5.2 mrem, with a standard deviation of 0.615. What is the probability that a randomly selected individual on such a flightis exposed to more than 6.0 mrem (millirem) of atmospheric radiation?

0.097 is the probability that a randomly selected individual is exposed to more than 6.0 mrem of atmospheric radiation.              

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 5.2 mrem

Standard Deviation, σ = 0.615

We are given that the distribution of atmospheric radiation is a bell shaped distribution that is a normal distribution.

Formula:

P(flightis exposed to more than 6.0 mrem)

P(x > 6.0)

Calculation the value from standard normal z table, we have,  

0.097 is the probability that a randomly selected individual is exposed to more than 6.0 mrem of atmospheric radiation.

b

step-by-step explanation: