You work for a soft-drink company in the quality control division. You are interested in the variance of on of your production lines as a measure of consistency. The product is intended to have a mean of 12 ounces and your team would like the variance to be as low as possible. (ou gather a random sample of 16 containers. Estimate the population variance at a 80% level of confidence. 11.83 11.9 11.97 11.82 11.85 11.89 12 12 12 12.01 12.02 12.04 12.05 12.11 12.16 12.18 Variance of Data: 0.012 Note: Round all values to 3 decimals and use those rounded values in subsequent calculations. ) Find the lower and upper x critical values at 80% confidence: Lower: Upper: P) Report your confidence interval for o?: Lower Bound: Upper Bound:

MATLAB: An Introduction with Applications
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You work for a soft-drink company in the quality control division. You are interested in the variance of one
of your production lines as a measure of consistency. The product is intended to have a mean of 12 ounces,
and your team would like the variance to be as low as possible.
You gather a random sample of 16 containers.
Estimate the population variance at a 80% level of confidence.
11.82 11.83
11.85
11.89
11.9
11.97
12
12
12
12.01
12.02
12.04
12.05
12.11
12.16
12.18
Variance of Data: 0.012
Note: Round all values to 3 decimals and use those rounded values in subsequent calculations.
a) Find the lower and upper x critical values at 80% confidence:
Lower:
Upper:
b) Report your confidence interval for o?:
Lower Bound:
Upper Bound:
Transcribed Image Text:You work for a soft-drink company in the quality control division. You are interested in the variance of one of your production lines as a measure of consistency. The product is intended to have a mean of 12 ounces, and your team would like the variance to be as low as possible. You gather a random sample of 16 containers. Estimate the population variance at a 80% level of confidence. 11.82 11.83 11.85 11.89 11.9 11.97 12 12 12 12.01 12.02 12.04 12.05 12.11 12.16 12.18 Variance of Data: 0.012 Note: Round all values to 3 decimals and use those rounded values in subsequent calculations. a) Find the lower and upper x critical values at 80% confidence: Lower: Upper: b) Report your confidence interval for o?: Lower Bound: Upper Bound:
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