A sample of 200 items provided a proportion of p = Ho: p= = 0.45 H: P = 0.45 Since this test is for a population proportion, the z test statistic will be found. This calculation is given below where is the sample proportion, po is the hypothesized population proportion, and n is the sample size. Z = 0.436. The hypotheses are given below. P - Po Po(1 - Po) n The value for Po the hypothesized population proportion we are testing. Here, we have po There was a sample of 200 items given, so we have n =