1. Using Table 2 of the Appendix of Statistical Tables, calculate the probability that:

a. z is less than 1.48.

b. z is greater than 1.90.

c. z is between 1.48 and 1.90.

d. z is between –1.48 and 1.90.

2. What is the value of z if:

a. 60 percent of all values of z are larger.

b. 10 percent of all values of z are larger.

c. 68.26 percent of all possible z values (symmetrically distributed around the mean) are to be contained in this interval.