A Large University Is Interested in the Outcome of a Course

question 77

Short Answer

A large university is interested in the outcome of a course standardization process. They have taken a random sample of 100 student grades, across all instructors. The grades represent the proportion of problems answered correctly on a midterm exam. The sample proportion correct was calculated as 0.78.
A) Construct a 90% confidence interval on the population proportion of correctly answered problems.
B) Construct a 95% confidence interval on the population proportion of correctly answered problems.

• A) Construct a 90% confidence interval on the population proportion of correctly answered problems.
• B) Construct a 95% confidence interval on the population proportion of correctly answered problems.

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