Test Hypotheses About a Population Proportion
-A Method Currently Used $25 \%$

question 53

Short Answer

Test Hypotheses about a Population Proportion
-A method currently used by doctors to screen women for possible breast cancer fails to detect cancer in $25 \%$ 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 70 women known to have breast cancer were screened using the new method. Of these, the new method failed to detect cancer in 8 . Is the sample size sufficiently large in order to conduct this test of hypothesis? Explain.

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Definitions:

Magnitude of the Life Event

The overall impact or significance that an event has on a person's life.

Material Resources

Physical and tangible assets or substances that are used in the production of goods and services or in achieving goals.

Positive Outcomes

Favorable results or benefits stemming from a particular course of action or condition.

Noxious

Harmful, poisonous, or very unpleasant.