Florida International University
Business Statistics - STA 2023
Ms. Laura Reisert Instructor
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Chapter 7-B Supplelmentary Exercises
- A method currently used by doctors to screen women for possible breast cancer fails to detect cancer in 12% of the women who actually have the disease. A new method has been developed that researchers hope will be able to detect cancer more accurately. A random sample of 200 women known to have breast cancer were screened using the new method. Of these, the new method failed to detect cancer in 18. Do the data provide sufficient evidence to indicate that the new screening method is better than the one currently in use? Use a significance level of .05.