Mathematics, 26.11.2019 20:31 syd141
Are you smarter than a second grader? a random sample of 60 second graders in a certain school district are given a standardized mathematics skills test. the sample mean score is = 52. assume the standard deviation of test scores is σ = 15. the nationwide average score on this test is 50. the school superintendent wants to know whether the second graders in her school district have greater math skills than the nationwide average.
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Mathematics, 21.06.2019 14:40
Chose the graph below that represents the following system of inequality’s
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