1/7 divided by 20/21
1 answer:
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Considering the situation described, the scientist's null and alternative hypothesis are described by:
Null hypothesis ; Alternative hypothesis
.
At the null hypothesis, it is tested if there is no difference, that is, the difference of the means represented by is of 0, hence:
At the alternative hypothesis, it is tested if there is a difference, hence:
More can be learned about an hypothesis test at brainly.com/question/26454209