Question

A method used currently by physicians to screen for possible breast cancer fails to detect cancer ins 15% of patients who actually have the disease. A new method has been developed that researchers hope will be able to do a better job detecting cancer more accurately. A random sample of 80 patients known to have breast cancer were screened using the new method. Of these, the new method failed to detect cancer in 9. Test a claim that the new method is more effective than the traditional method for detecting breast cancer. Let alpha =0.1

Ho:

H1:

Test statistic:

Critical value:

or P value:

What should the researchers conclude from the test?

Answer 1