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4 Unit A2 2: Applied Mathematics (A-level only)

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Question 375

The probability that a recipient of a charity's email signs up to volunteer is 0.12. The charity rewrites the email and believes this will increase the population probability of a recipient signing up. After the change, 16 of a random sample of 80 recipients sign up.

Test the charity's belief at the 5% level of significance. State your hypotheses clearly.

[5]
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4 Unit A2 2: Applied Mathematics (A-level only) Questions

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