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Galina-37 [17]
2 years ago
12

Refraction is the bending that occurs when a wave moves from one medium to another at an angle and

Mathematics
2 answers:
Serjik [45]2 years ago
5 0

Answer:

True

Step-by-step explanation:

rusak2 [61]2 years ago
3 0
True hope that can help you
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9.50 One way to evaluate the effectiveness of a teaching assistant is to examine the scores achieved by his or her students on a
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Given that a professor sets a standard examination at the end of each semester for all sections of a course. The variance of the scores on this test is typically very close to 300.

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(Two tailed test for variance )

Sample variance =480

We can use chi square test for testing of hypothesis

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The sample variance cannot be claimed as equal to 300.

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