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:

Symptom

A symptom is a sign or indication of a condition, disorder, or disease, often observed by the patient, differing from signs that are detectable by others or through tests.

Malaria

A mosquito-borne infectious disease affecting humans and other animals caused by Plasmodium parasites.

Elevated Red Blood Cell Count

This refers to an increase in the number of red blood cells in the bloodstream, which can improve oxygen delivery to tissues but may indicate health problems.

Healthcare

The organized provision of medical care to individuals or a community, including preventative, curative, and palliative services.