The standard deviation of a 1200 volume population is 90cm. Find out how many units the sample should consist of so that the 6- standard error of the mean is not more than 10 cm. O a) 56 O B) 23 OC) 81 O D) 17 O TO) 34

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The standard deviation of a 1200 volume population is 90cm. Find out how many units the sample should consist of so that the
6-
standard error of the mean is not more than 10 cm.
Оа) 56
O B) 23
O C) 81
D) 17
O TO) 34
Transcribed Image Text:The standard deviation of a 1200 volume population is 90cm. Find out how many units the sample should consist of so that the 6- standard error of the mean is not more than 10 cm. Оа) 56 O B) 23 O C) 81 D) 17 O TO) 34
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