(b) A chief practitioner in a certain maternity hospital claims that the average birth wcight of newborns in the hospital is 3.2 kg. A random sample of 20 newborns was taken to investigate this claim, and the weights (in kilograms) were recorded as shown in table 1: Table 1 3.68 3.20 3.04 2.56 3.36 3.36 3.36 352 3.04 3.20

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(b)
A chief practitioner in a certain maternity hospital claims that the average birth weight
of newborns in the hospital is 3.2 kg. A random sample of 20 newborns was taken to
investigate this claim, and the weights (in kilograms) were recorded as shown in
table 1:
Table 1
3.68 3.20 3.04 2.56 3.36
3.36 3.36 352 3.04 3.20
3.52 3.36 3.04 2.72 3.36
3.52 2.88 2.88 3.68 2.60
Test at 5% significance level whether the practitioner's claim is true.
Transcribed Image Text:(b) A chief practitioner in a certain maternity hospital claims that the average birth weight of newborns in the hospital is 3.2 kg. A random sample of 20 newborns was taken to investigate this claim, and the weights (in kilograms) were recorded as shown in table 1: Table 1 3.68 3.20 3.04 2.56 3.36 3.36 3.36 352 3.04 3.20 3.52 3.36 3.04 2.72 3.36 3.52 2.88 2.88 3.68 2.60 Test at 5% significance level whether the practitioner's claim is true.
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