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A shop is conducting a survey of people using their new computer program. The sample of 140 people say that 128 would purchase the program.
A shop is conducting a survey of people using their new computer program. The sample of 140 people say that 128 would purchase the program.
1. what is the 89% confidence interval for the population proportion?
2. the shop wants to prove the claim is less than 90% of the people would buy the program. How do I conduct a hypothesis test and use alpha=0.09?
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