24 month old boys and girls according to their weight distribution X,- N(4,.0 = 0.70) and X, N(u,,o = 0.75). were given respectively. 6 girls and 5 boys were selected 1. randomly. Their weights were given below. Girls 11 12 14 11.5 11.8 12.4 Boys X 12 13 15 14.5 15.5 a) Find the 98% confidence interval for the difference in two independent population means? b) Compare the difference in two independent population means at 5% significance level?

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1.
24 month old boys and girls according to their weight distribution X, - N(4,0 = 0.70)
and X, - N(u,,0 = 0.75). were given respectively. 6 girls and 5 boys were selected
randomly. Their weights were given below.
Girls Xu
11 12
11.5 11.8
14
12.4
Boys X
13
15
14.5 15.5
12
a) Find the 98% confidence interval for the difference in two independent population means?
b) Compare the difference in two independent population means at 5% significance level?
Transcribed Image Text:1. 24 month old boys and girls according to their weight distribution X, - N(4,0 = 0.70) and X, - N(u,,0 = 0.75). were given respectively. 6 girls and 5 boys were selected randomly. Their weights were given below. Girls Xu 11 12 11.5 11.8 14 12.4 Boys X 13 15 14.5 15.5 12 a) Find the 98% confidence interval for the difference in two independent population means? b) Compare the difference in two independent population means at 5% significance level?
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