Assume a researcher is interested in the effect of weight on a number of adverse events…

Assume a researcher is interested in the effect of weight on a
number of adverse events in his new clinical trial. Assume the
following table represents the weights (kg) for a SRS of
individuals in both arms of the study.

Place Order

Placebo

76.5

64.7

67.8

65.2

74.6

80.1

64.8

Intervention

80.7

78.6

76.4

78.3

A) Calculate the standard error for the difference in weight
between the two arms of the study.

B) Calculate the pooled standard error for the difference
assuming equal variances.

opstion 1

A) SE=3.28

B) SE=4.24

option 2

   A) SE=2.58

B) SE=3.34

option 3

A) SE=2.85

B) SE=3.89