The Figure Shows Two 1

question 52

Multiple Choice

The figure shows two 1.0 kg blocks connected by a rope.A second rope hangs beneath the lower block.Both ropes have a mass of 250 g.The entire assembly is accelerated upward at 2.3 m/s² by force .What is the tension at the top end of rope 1?

• A)18 N
• B)15 N
• C)2.9 N
• D)3.5 N

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Definitions:

Type Errors

Errors made in hypothesis testing where Type I error is rejecting a true null hypothesis, and Type II error is failing to reject a false null hypothesis.

Type I Error

The statistical error that occurs when the null hypothesis is incorrectly rejected when it is actually true.

Type II Error

The error of failing to reject a false null hypothesis, also known as a false negative error.

Test Power

The probability that a statistical test will reject a false null hypothesis, a measure of a test’s effectiveness.