Question: Estimate the sample size you will require. Calculate the effect size of the different groups. Table XI.1 Means and Variances in Laboratory Research study with

  1. Estimate the sample size you will require.

Calculate the effect size of the different groups.

Table XI.1

Means and Variances in Laboratory Research study with two groups.

WBC, RBC AND HGB GROUP AND CONTROL

Independent Samples T-Test

Independent Samples T-Test

t

df

p

WBC

-0.945

137

0.346

RBC

-2.068

137

0.041

HGB

-2.604

137

0.010

Note. Student's t-test.

Descriptive

Group Descriptive

Group

N

Mean

SD

SE

WBC

0

70

7.531

3.404

0.407

1

69

8.162

4.412

0.531

RBC

0

70

4.723

0.713

0.085

1

69

4.968

0.684

0.082

HGB

0

70

13.167

1.877

0.224

1

69

13.952

1.669

0.201

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