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A retailer is looking to evaluate its customer service. Management has determined that if the retailer wants to stay competitive, then it will have to have at least an 87% satisfaction rate among its customers. Management will take corrective actions if the satisfaction rate falls below 87%. A survey of 1,130 customers showed that 949 were satisfied with their customer service.
What is the value of the appropriate test statistic?
Compute the P-value
A savings account was opened for a baby on 1985 with a $100 deposit. No withdrawals or deposits occurred since the account was opened. The current balance of the account is $246.47. Measured in dollars of the year in which the account was opened, how..
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Estimated proportion is within 2.5 percentage points of the true proportion. A previous poll suggests that the proportion is 85%. How large must your sample be?
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