Scores were obtained from a hypothetical test A. Only 12 scores from a large group in...

Scores were obtained from a hypothetical test A. Only 12 scores from a large group in which the distribution of scores is approximately normal are presented here.

75 61 93 84 11 50 36 42 57 76 46 70

Mean=58

SD=23

58.41667 23.00774

Using normal distribution to estimate approximately what percent of students in the group would score lower than 75? Approximately what percent of students in the group would have a score between 42 and 75?

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orchestra answered 1 year ago

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