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The following grades were obtained on the final statistics exam in the summer 2016, in the...

The following grades were obtained on the final statistics exam in the summer 2016, in the Urban Studies Department of UCLA University. There were 32 Students in the class.

80 85 75 60 70 80

a) At 95% level of confidence can we conclude that on average students scored better than 80 in the class?

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