The Mechanical Adding Machines of Pascal and Leibniz Were Not

question 50

Multiple Choice

The mechanical adding machines of Pascal and Leibniz were not widely adopted because

• A) they were too expensive.
• B) there were unreliable.
• C) they were too difficult to program.
• D) they could not handle fractions.
• E) bookkeepers successfully lobbied the King, and he made the machines illegal.

Understand the concepts and methods involved in experimental research designs.

Identify and explain the placebo effect and its implications in psychological research.

Understand the significance of random assignment and random sampling in experimental research.

Recognize the roles of experimental and control groups in determining the effects of variables.

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Definitions:

Ventilation

The process of moving fresh air into and stale air out of a space to ensure adequate air quality.

Perfusion

The process of delivering blood to a capillary bed in the biological tissue, crucial for the delivery of oxygen and nutrients.

Scintiphotography

A diagnostic imaging technique involving the use of radioactive substances to visualize and measure the function of organs.

Legionnaires' Disease

A severe form of pneumonia caused by the bacterium Legionella pneumophila, often found in water systems.