We Have Calculated a Confidence Interval Based on a Sample

question 96

Multiple Choice

We have calculated a confidence interval based on a sample of size n = 100. After looking over our work, we realized that the sample size was actually 400. How will the corrected interval compare to the original interval?

• A) The corrected interval will be the same width.
• B) The corrected interval will be one-fourth as wide.
• C) The corrected interval will be four times as wide.
• D) The corrected interval will be one-half as wide.
• E) The corrected interval will be twice as wide.

---

Definitions:

Bank Office

Typically refers to the administrative and support functions of a bank that are not directly involved in customer-facing services.

Tellers

Employees in a bank who directly deal with customer transactions, such as deposits, withdrawals, and other financial inquiries.

M/M/1 Model

A mathematical model used in queueing theory to describe a single server queue with Poisson arrivals and exponentially distributed service times.

M/D/1 Model

A queueing model where arrivals are Markovian (M), service times are deterministic (D), and there is one server (1).