A Manufacturer Claims That Less Than 1% of All His

A manufacturer claims that less than 1% of all his products do not meet the minimum government
Standards. A survey of 500 products revealed ten did not meet the standard.
If the computed value of z = -2.25 and the level of significance is 0.03, what is your decision?

A) You reject the null hypothesis, and agree that less than 1% fail to meet government standards.
B) You have insufficient evidence to reject the null hypothesis.
C) You reject the alternate hypothesis and agree that less than 1% meet government standards.
D) You should have used the t-test.