Administrators at the stock exchange claim that only 10% of all companies report incorrect profits, but you suspect that the proportion is much higher . Use the results of the audit of 250 companies...

Administrators at the stock exchange
claim that only 10% of all companies
report incorrect profits, but you
suspect that the proportion is much higher. Use the results of the audit of 250 companies with results that 45 reported incorrect profits to answer the following.

a. State the null and alternative hypotheses.

b. Perform a significance test. Report the test statistic value and the p-value.

c. State your conclusion regarding the results of your hypothesis test in context of the problem.