Question

Scientists at a pharmaceutical company want to compare their new drug to an existing one. Let's call the new drug A and the old drug B. In a random sample of 120 subjects who took drug A, 40% developed severe side effects. Whereas, in a random sample of 100 subjects who took drug B, 45% developed severe side effects. These scientists are interested to see if there is significant evidence that their new drug reduces severe side effects in patients at the α=0.05 significance level. What is the correct set of hypotheses? Group of answer choices H0:p1−p2=0Ha:p1−p2≠0 H0:p^1−p^2=0Ha:p^1−p^2<0

          Scientists at a pharmaceutical company want to compare their new drug to an existing one. Let's call the new drug A and the old drug B. In a random sample of 120 subjects who took drug A, 40% developed severe side effects. Whereas, in a random sample of 100 subjects who took drug B,  45% developed severe side effects. These scientists are interested to see if there is significant evidence that their new drug reduces severe side effects in patients at the α=0.05 significance level.
What is the correct set of hypotheses?
Group of answer choices
H0:p1−p2=0Ha:p1−p2≠0
H0:p^1−p^2=0Ha:p^1−p^2<0

Added by Mary W.

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