You work for a soft-drink company in the quality control division. You are interested in the standard deviation 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 standard deviation to be as low as possible. You gather a random sample of 17 containers. Estimate the population standard deviation at a 90% level of confidence. 12.05 12.01 11.96 11.91 12.1 12.06 12.01 12.01 12.07 12.05 12.04 11.88 12.09 12.08 11.95 11.97 12.01 I'M HAVING TROUBLE WITH THE LAST PROBLEM ON MY HOMEWORK I HAVE MY STANDARD DEVIATION CORRECT AND MY LOWER AND UPPER CORRECT AS WELL. (Data checksum: 204.25) Note: Keep as many decimals as possible while making these calculations. If possible, keep all answers exact by storing answers as variables on your calculator or computer. a) Find the sample standard deviation: n=17, s2 =0.06316 b) Find the lower and upper χ2χ2 critical values at 90% confidence:Lower: 7.9616 Upper: 29.2962 c) Report your confidence interval for σ: ( , ) 0.196035423 , 0.35627133 THESE ARE THE ANSWERS I GOT FOR MY REPORT,I EVEN PUT IT UP TO THREE DECIMAL PLACES AND IT DID NOT WORK
You work for a soft-drink company in the quality control division. You are interested in the standard deviation 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 standard deviation to be as low as possible. You gather a random sample of 17 containers. Estimate the population standard deviation at a 90% level of confidence.
| 12.05 | 12.01 | 11.96 | 11.91 | 12.1 | 12.06 |
| 12.01 | 12.01 | 12.07 | 12.05 | 12.04 | 11.88 |
| 12.09 | 12.08 | 11.95 | 11.97 | 12.01 |
I'M HAVING TROUBLE WITH THE LAST PROBLEM ON MY HOMEWORK I HAVE MY STANDARD DEVIATION CORRECT AND MY LOWER AND UPPER CORRECT AS WELL.
(Data checksum: 204.25)
Note: Keep as many decimals as possible while making these calculations. If possible, keep all answers exact by storing answers as variables on your calculator or computer.
a) Find the sample standard deviation: n=17, s2 =0.06316
b) Find the lower and upper χ2χ2 critical values at 90% confidence:
Lower: 7.9616 Upper: 29.2962
c) Report your confidence interval for σ: ( , )
0.196035423 , 0.35627133
THESE ARE THE ANSWERS I GOT FOR MY REPORT,I EVEN PUT IT UP TO THREE DECIMAL PLACES AND IT DID NOT WORK
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