University officials hope that changes they have made have improved the retention rate. In 2010, a sample of 1926 freshmen showed that 1400 returned as sophomores. In 2011, 1508 of 2011 freshmen sampled returned as sophomores. Determine if there is sufficient evidence at the 0.05 level to say that the retention rate has improved. Ho: P₁ P₂ Ha: P₁ P2 p = P₁ = P = x₁+x₂ 1400 1926 1400+1505 ntr 1926+2011 = .73 2905 3937 = .74 1508 P2 = 20 = .75 2011

Q: Need assistance with c through e only!

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Q: is this fully simlified ?

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Q: From where we get this answer?

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Q: could you do part f, doesnt have to be detailed

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Q: can u show me the work for question a

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Q: Part C is incorrect, please help! So, that will probably mean parts D and E are also incorrect.

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Q: Is there a better explaination for part 2 because i dont get how they got there

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Q: answer b and c are not clear, can you upload them again??

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Q: Find e

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Q: Part C shows up as incorrect

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