A Researcher Believes She Has Designed a Keyboard That Is

question 81

Short Answer

A researcher believes she has designed a keyboard that is more efficient to use than a standard keyboard. In order to help decide if this is the case, typing speeds were taken for 8 different people on each keyboard. The lengths of time, in minutes, for each of the people to type a pre-selected manuscript are listed below. Assume the two population distributions are normal. Use the data to determine if the original keyboard yields slower times. Use a significance level of = 0.05.
Use the Data Analysis software if you prefer.
Test Statistic = ______________
Reject Region: Reject H₀ if |t| > ______________
Conclusion: ______________
The original keyboard ______________.

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Definitions:

Nonverbal Behavior

Communication that occurs without words, through gestures, facial expressions, posture, and other body movements.

Verbal Remarks

Comments or statements made using words, either spoken or written.

Trusting Relationship

A connection between individuals characterized by confidence, reliability, and mutual respect.

Skill Development

The process of learning and improving abilities, techniques, or talents to enhance professional or personal performance.