A washer and a dryer cost 1021 combined. The washer costs 71 more than the dryer. What is the cost of the dryer?
1 answer:
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Considering the situation described in the exercise, it is found that the correct null and alternative hypothesis for this test are given by, respectively:
At the null hypothesis, it is tested if the mean is of 350 degrees, that is:
At the alternative hypothesis, it is tested if the mean is different of 350 degrees, hence:
More can be learned about the test of an hypothesis at brainly.com/question/26454209