Mathematics, 03.04.2021 05:50 amychan123
According to the guideline from the Health Department, every over-weight child needs to take a fitness test. Every ten over-weight children would be randomly grouped together to attend the fitness test. According to the past experience, the probability for each child to pass the fitness test is 0.75 and whether a child can pass the test is independent with the test result of other children. (a) Many test sessions will be conducted regularly, each with 10 independent children. Find the expectation and standard deviation of the number of children can pass the fitness test in a test session.
Answers: 2
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Amira is painting a rectangular banner 2 1/4 yards wide. the banner will have a blue background. amira has enough paint to cover 1 1/2 square yards of the wall. the school colors are blue and yellow, so amira wants to add yellow rectangles on the left and right sides of the blue rectangle. the yellow rectangles will each be 3/4 yards wide and the same height as the blue rectangle. what will be the total area of the two yellow rectangles?
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According to the guideline from the Health Department, every over-weight child needs to take a fitne...
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