A Simple Random Sample of 60 Blood Donors Is Taken

question 55

Multiple Choice

A simple random sample of 60 blood donors is taken to estimate the proportion of donors with type A blood with a 95% confidence interval.In the sample,there are 10 people with type A blood.What is the margin of error for this confidence interval?

• A)0.048
• B)0.079
• C)0.094
• D)1.96

---

Definitions:

Differential Cost

The difference in total cost that will result from selecting one option over another in decision-making processes.

Sunk Cost

Costs that have already been incurred and cannot be recovered.

Model 220 Machine

a specific model or type of machinery, often referenced in manufacturing or industrial contexts, but without additional context, the exact nature or use cannot be determined.

Contribution Approach

A managerial accounting method that separates fixed costs from variable costs to determine the contribution margin per unit and overall contribution towards fixed costs and profits.