1. The average length of night (sunset to sunrise) in Manila is said to be 12.2 hours. A group of students said that in February, it will be shorter. They do a study about this and choose 14 randomly...


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4. what type of test to use


5. what is the level of significance




1. The average length of night (sunset to sunrise)<br>in Manila is said to be 12.2 hours. A group of<br>students said that in February, it will be shorter.<br>They do a study about this and choose 14<br>randomly selected days in February. The<br>computed sample average is 11.19 hours with a<br>standard deviation of 0.25 hours. Is there enough<br>evidence for the students' claim? Use a=0.05.<br>

Extracted text: 1. The average length of night (sunset to sunrise) in Manila is said to be 12.2 hours. A group of students said that in February, it will be shorter. They do a study about this and choose 14 randomly selected days in February. The computed sample average is 11.19 hours with a standard deviation of 0.25 hours. Is there enough evidence for the students' claim? Use a=0.05.

Jun 11, 2022
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