The proper notation for a normal distribution with a mean of 250 and standard deviation of 25 is:
O A. N(250,1)
B. X(250,25)
O C. N(250,25)
D. N(25,250)
E. None of the above

The magnitude, m, of an earthquake is defined to be m=log l/s, where i is the intensity of the earthquake (measured by the amplitude of the seismograph wave) and s is the intensity of a “standard” earthquake, which is barely detectable. what is the magnitude of an earthquake that is 1,000 times more intense than a standard earthquake? use a calculator. round your answer to the nearest tenth.