Mathematics, 07.04.2020 04:22, ayoismeisalex
A professor of statistics refutes the claim that the average student spends 3 hours studying for the midterm exam. She thinks they spend less time than that. Which hypotheses are used to test the claim? A. H_0: mu < = 3 vs. H_1: mu > 3 B. H_0: mu = 3 vs. H_1: mu notequalto 3 C. H_0: mu notequalto 3 vs. H_1: mu = 3 D. H_0: mu > = 3 vs. H_1: mu < 3
Answers: 1
Mathematics, 21.06.2019 20:50, kidpryo1
There are three bags: a (contains 2 white and 4 red balls), b (8 white, 4 red) and c (1 white 3 red). you select one ball at random from each bag, observe that exactly two are white, but forget which ball came from which bag. what is the probability that you selected a white ball from bag a?
Answers: 1
Mathematics, 22.06.2019 03:30, sbailey0962
Runners run around the school's football field. the cross country coach determines that the width of the field is seventy yards shorter than the length. part a write an expression that represents the perimeter of the football field. let x represent the length of the football field. include parentheses in your expression. next, write an equivalent expression that does not include parentheses. what property or properties did you use to simplify? explain. part b the cross country coach later determines that the length of the football field is 120 yards. all students must run five laps. using your answer from part a, determine the actual number of yards that each athlete must run in the tryouts. in order to make the team, students must complete the laps in 6 minutes. how quickly must they run each lap?
Answers: 3
A professor of statistics refutes the claim that the average student spends 3 hours studying for the...
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