A Method Currently Used by Doctors to Screen Women for Possible

question 89

Essay

A method currently used by doctors to screen women for possible breast cancer fails to detect cancer in 15% ofthe women who actually have the disease. A new method has been developed that researchers hope will beable to detect cancer more accurately. A random sample of 80 women known to have breast cancer werescreened using the new method. Of these, the new method failed to detect cancer in 9. Is the sample sizesufficiently large in order to conduct this test of hypothesis? Explain. Round to the nearest thousandth.

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Definitions:

Normal Curve

A bell-shaped curve that represents the distribution of many types of data in which most values cluster around a central mean.

Standard Deviation

A statistic that measures the dispersion or variation from the average in a set of data, indicating how spread out the numbers are.

Test-retest Reliability

The consistency of a psychological test or assessment over time when administered to the same group of people.

Raw Scores

A raw score represents the number of questions answered correctly on a test or assessment before any adjustments or transformations.