Let X be a normal random variable with a mean of 0.47 and a standard deviation of 4.75.
a)Calculate the corresponding standardized value (z) for the point x = 4.6. Give your answer to 2 decimal places.
z =
b)The area under the standard normal probability density function from negative infinity to z is interpreted as the probability that the random variable is:
less than or equal to zequal to zgreater than or equal to z





