lloy (c) Two different methods were used for producing the aluminium which is powder metallurgy and extrusion. Twenty and twelve samples were taken from each method for inclusion detection. The mean and standard deviation for powder metallurgy and extrusion methods are 20 and 7, and 17 and 5 respectively with same population variance. Construct 95% confidence intervals between the means of powder metallurgy and extrusion

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(c) Two different methods were used for producing the aluminium alloy bar
which is powder metallurgy and extrusion. Twenty and twelve samples were
taken from each method for inclusion detection. The mean and standard
deviation for powder metallurgy and extrusion methods are 20 and 7, and 17
and 5 respectively with same population variance. Construct 95% confidence
intervals between the means of powder metallurgy and extrusion
Transcribed Image Text:(c) Two different methods were used for producing the aluminium alloy bar which is powder metallurgy and extrusion. Twenty and twelve samples were taken from each method for inclusion detection. The mean and standard deviation for powder metallurgy and extrusion methods are 20 and 7, and 17 and 5 respectively with same population variance. Construct 95% confidence intervals between the means of powder metallurgy and extrusion
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