Suppose you are working with a data set that is normally distributed, with a mean of 200 and a standard deviation of 48. Determine the value of x from the following information.

**(Round your answers and z values to 2 decimal places.)**

**(a) **90% of the values are greater than x.

**(b) **x is less than 13% of the values.

**(c) **21% of the values are less than x.

**(d) **x is greater than 60% of the values.