b. Either the null hypothesis is correct and an unusual event has occurred (one which had a chance of only 4% of occurring), or the alternative hyppothesis is correct.

c. Either the alternative hypothesis is correct and an unusual event has occurred (one which had a chance of only 4% of occurring), or the alternative hypothesis is correct.

d. The chance that the alternative hypothesis is incorrect is 4%.

e. The chance that the null hypothesis is correct is 4%.