Hypothesis Test for One Population Proportion In 2015, it was reported that 64% = .640 of adult Americans watched TV news regularly. A sociologist wonders: Is the proportion different today? Do all Steps1-4 and write the Conclusion. Step 1. State the null Hypothesis Ho: p = ? Step 2. State the alternative Hypothesis H1: ? Step 3. Graph, shade, and label tick marks for the Normal Curve. Its center is the population proportion p = .640. Use Level of Significance = .05 and make sure to use invNorm to find critical value tick marks. The sociologist obtained a random sample of 400 adults and found that 268 watch TV news regularly. Step 4. Is the random sample proportion Unusual under assumption of the null hypothesis? Make sure to plot and label the random sample proportion on your graph in Step 3 Write the Conclusion (two statements)