7 Step Hypothesis Test:-

Question:-

1. Since the financial scandals in the early 2000s, companies have been working to improve their internal audit procedures. A random sample of 180 American companies were surveyed and asked whether or not they plan on increasing the number of internal audit staff in the next year. Of the 180 companies 42 indicated they plan on doing this. At a 0.10 significance level, is there sufficient evidence to conclude the proportion of companies that plan on increasing the number of internal audit staff in the next year is less than 25%?