Water Is Pumped Through the Hose Shown Below, from a Lower

question 81

Multiple Choice

Water is pumped through the hose shown below, from a lower level to an upper level. Compared to the water at point 1, the water at point 2:

• A) has greater speed and greater pressure
• B) has greater speed and less pressure
• C) has less speed and less pressure
• D) has less speed and greater pressure
• E) has greater speed and the same pressure

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Definitions:

P > .05

A statistical expression indicating that the probability of the observed data, or something more extreme, if the null hypothesis is true, is greater than 5%.

Null Hypothesis

The default assumption in statistical hypothesis testing that there is no significant effect or difference, intended to be challenged by the alternative hypothesis.

Degrees of Freedom

The number of independent values or quantities that can be assigned to a statistical distribution, which affects the calculation of statistical estimates.

T-test for Dependent Means

A statistical test used to compare the means of two related groups.