Mathematics, 27.11.2019 19:31 jamesc24
Previously, an organization reported that teenagers spent an average of 4.5 hours per week on the phone. the organization thinks that the current mean is higher. to test the claim, fifteen randomly chosen teenagers were asked how many hours per week they spend on the phone. the sample mean was 4.75 hours with a sample standard deviation of 2.0. suppose that a hypothesis test is conducted to test the claim that the mean hours is more than 4.5 hours per week. what are the hypotheses for the test?
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Mathematics, 21.06.2019 15:30
Mary used 1/7 of a spool of ribbon to complete 4 projects. she used the same amount of ribbon on each project. how much ribbon did she use on each project?
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Mathematics, 22.06.2019 03:00
Plzz ! if you were constructing a triangular frame, and you had wood in the length of 4 inches, 4 inches, and 7 inches, would it make a triangle? would you be able to create a frame from these pieces of wood? yes or no? = explain your mathematical thinking/show your work:
Answers: 1
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