Question

2. Testing conductivity of Corning cookware Based on the seven sample study of the heat conductivity:

0.9  0.75 1 1.2 1.1 0.95 0.92

Estimate or predict the heat conductivity of the Corning Ware for cooking at 90 % confidence.

It would be a t distribution and the sample size less than 30 and we do not know Population Standard deviation.

Answer 1

Answer:-

Given That:-

Testing conductivity of Corning cookware Based on the seven sample study of the heat conductivity:

0.9  0.75 1 1.2 1.1 0.95 0.92

Estimate or predict the heat conductivity of the Corning Ware for cooking at 90 % confidence.

Given That,

Sample size n = 7

Level of Significance = 0.1

Populatiion standard deviation is not known.

The 100(1 - )% confidence interval for heat conductivity can be calculated as:

Hence, the 100(1 - )% confidence interval for heat conductivity is

Therefore, the 90% confidence interval for heat conductivity is

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