A manufacturer claims that 10% of women using the "pill" suffer from side effects. The Federal Drug Administration (FDA) believes that the manufacturer's claim is too low and decides to test the manufacturer's claim at a = 5 %. A random sample of 900 women who use the manufacturer's pill shows that 103 suffer side effects. The FDA's null hypothesis is: d. the sample proportion of women who suffer side effects is 0.10 b. the population proportion of women who suffer side effects is 0.10. C. the population proportion of women who suffer side effects is greater than 0.10. d. the sample proportion of women who suffer side effects is not equal to 0.10. e. the sample proportion of women who suffer side effects is less than 0.10.

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.