A Researcher Has Developed the Regression Equation Y = 2

question 41

Multiple Choice

A researcher has developed the regression equation y = 2.164 + 1.3657x,where n = 6,the mean of x is 8.667,S_xx = 89.333,and S_e = 3.44.The researcher wants to test if the slope is significantly positive,and he chooses a significance level of 0.05.The critical t value is ______.

• A) 2.776
• B) 2.132
• C) 2.015
• D) 1.943
• E) 1.782

---

Definitions:

Flake Tools

Prehistoric stone tools created by chipping or flaking off pieces from a larger stone, used by early humans for cutting and scraping.

Homo Erectus

An extinct species of early human that lived throughout Africa, Asia, and Europe between approximately 1.9 million and 143,000 years ago, known for its upright posture.

Toolmakers

Beings (often humans) who create, modify, or use tools, enhancing their ability to interact with and manipulate their environment.