A method currently used by doctors to screen women for possible breast cancer fails to detect cancer in 15% 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 80 women known to have breast cancer are screened using the new method, and it is discovered that the new method failed to detect the breast cancer in 8 of the 80 randomly selected women.

The value of the test statistic is equal to (round your answer to 2 decimals):