rosemarieevarrola66 rosemarieevarrola66
  • 16-04-2024
  • Mathematics
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a teacher wants to know if listening to popular music affects the performance of pupils a class of 50 gade 1 pupil was used in experament the mean score was 83 and the standard devation is 5. a prevoice study revealed that =82 and the standard deviation =10

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