Mathematics, 25.06.2019 18:00, Tyrant4life
The scores of an exam have a normal distribution. the mean of the scores is 48 and the standard deviation is 5. approximately what percent of the students taking the exam can be expected to score between 43 and 53?
Answers: 1
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Two parallel lines are crossed by a transversal. what is the value of x? x = 40 x = 70 x = 110 x = 130
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Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?
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Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables
Answers: 3
The scores of an exam have a normal distribution. the mean of the scores is 48 and the standard devi...
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