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9. Ho: ul = 50 Obtained value: Sx = 10 n = 20 Critical value: a = 0.05 X =54 Decision: (Reject or fail to

9. Ho: ul = 50 Obtained value: Sx = 10 n = 20 Critical value: a = 0.05 X =54 Decision: (Reject or fail to reject the null hypothesis) 20. Ho: u = 50 Obtained value: O. = 15 n = 70 Critical value: a = 0.05 X = 46 Decision: (Reject or fail to reject the null hypothesis)

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