Determine the median, A weight-loss program guarantees,

Determine the median

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Reference no: EM1321562

Question: A weight-loss program guarantees, "You'll lose weight within two weeks or we'll refund your money plus $10!" Using α = 5%, perform the sign test of the median paired difference to determine whether the median weight of these twelve participants decreased.

	Weight	Weight
Person	Before	After
Ann	150	152
Bob	213	214
Chris	249	238
Debby	114	115
Earl	144	144
Fred	132	133
Gary	187	188
Helen	163	164
Ira	210	204
Jessie	195	196
Kim	124	125
Linda	228	229

In a two-tailed sign test the observed value of the test statistic is the number of the less frequent sign: the smaller of n (+) the number of +'s or n (-) the number of -'s.

IN A ONE-TAILED SIGN TEST the test statistic may be n (+) or n (-), DEPENDING ON WHICH WAY YOU SUBTRACT!

Reference no: EM1321562

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