Observations on burst strength (Ib/in2) were obtained both for test nozzle closu

Question

Observations on burst strength (Ib/in2) were obtained both for test nozzle closure welds and for production canister nozzle welds.t Test 7200 6100 7300 7300 8000 7400 7300 7300 8000 6700 8300 Cannister 5250 5625 5900 5900 5700 6050 5800 6000 5875 6100 5850 6600 A comparative boxplot is given below. Test Nozie , Cannister sooo 5500 8000 8500 600 soo 7000 7500 Burst strength (b/in" ) Comment on interesting features (the cited article did not include such a picture, but the authors commented that they had looked at one). (Select all that apply.) o The production canister welds have much more variable burst strengths. o The test nozzle welds have much more variable burst strengths. D The production canister welds have consistently lower burst strengths than the test nozzle welds. o The production canister welds have much higher burst strengths. The test nozzle Welds data contain 2 outliers. D The production canister welds data contain 2 outliers.

Explanation / Answer

Lets check all the interesting feature:

Feature 1 : As we can see that production canister boxplot have much more width thatn the cannister boxplots.

so Feature 1 is correct.

Feature 2: This one is obviously incorrect as Feature 1 is true.

Feature 3 : The production canister welds have consistently lower burst streagths than the test nozzle welds.

That is also true as all the value for canister burst strengths is lower than the test nozzle welds. So, this feature is true

Feature 4. Incoorect as feature 3 is correct.

Feature 5: Nozzle welds data contain 2 outliers. As shown in box plot it doesnt have outliers or at max one outlier at 6100. So, incorrect statement.

Feature 6: Incorrect statement. No outliers here.

so. Feature 1 and 3 are correct.

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