A Psychologist Has Designed a New Intelligence Test

question 32

Multiple Choice

A psychologist has designed a new intelligence test.Historically,time to complete the old test was normally distributed with a standard deviation of 5 minutes.A sample of 50 new test taking times yielded an average time of 118 minutes.The 99% confidence interval for the average test taking time is _____.

• A)[116.18,119.82]
• B)[116.36,119.64]
• C)[116.61,119.39]
• D)[115.67,120.33]
• E)[115.82,120.18]

---

Definitions:

Circuit Input

The point at which a signal or power enters an electronic or electrical circuit.

Control Coil

An electromagnetic coil used in electrical relays and contactors that, when energized, creates a magnetic field to open or close contacts within the device.

Operating Voltage

The specific voltage at which an electrical device or circuit is designed to operate optimally.

Terminal Numbers

Labels or numbers assigned to the connection points on an electrical device to guide correct wiring and setup.