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Q.In a college, 60 junior students are found to have a mean height of 171.5cm and 50 senior students are found to have a mean

Q.In a college, 60 junior students are found to have a mean height of 171.5cm and

50 senior students are found to have a mean height of 173.8 cm.

Can we conclude,

based on these data, that the juniors are shorter than the seniors at 1% level

assuming that the SD of students of that college is 6.2cm?

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