An engineer wants to compare the tensile strengths of steel bars that are produced using a conventional method and an experimental method. (The tensile strength of a metal is a measure of its ability to resist tearing when pulled lengthwise.) To do so, the engineer randomly selects steel bars that are manufactured using each method and records the following tensile strengths (in Newtons per square millimeter). At α=.10, can the engineer claim that the experimental method produces steel with greater mean tensile strength? Should theengineer recommend using the experimental method? First use the F test to determine whether or not to useequal variances in choosing the model.(??? ????? ?? ???? ?̅ ??? ? ??? ???ℎ ???ℎ??) Experimental 395 389 421 394 407 411 389 402 422 416 402 408 400 386 411 405 389Conventional 362 352 380 382 413 384 400 378 419 379 384 388 372 383 12. An engineer wants to compare the tensile strengths of steel bars that are produced using a conventionalmethod and an experimental method. (The tensile strength of a metal is a measure of its ability to resist tearingwhen pulled lengthwise.) To do so, the engineer randomly selects steel bars that are manufactured using eachmethod and records the following tensile strengths (in Newtons per square millimeter). At a =.10, can theengineer claim that the experimental method produces steel with greater mean tensile strength? Should theengineer recommend using the experimental method? First use the F test to determine whether or not to useequal variances in choosing the model.(Use Excel to find x and sfor each method)Experimental 395Conventional 362389421394407411389402 422 416402408400 386411405 389352380382413384400378419379384388372383

Name: An engineer wants to compare the tensile strengths of steel bars that
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Description: An engineer wants to compare the tensile strengths of steel bars that are produced using a conventional method and an experimental method. (The tensile strength of a metal is a measure of its ability to resist tearing when pulled lengthwise.) To do s

Experimental Conventional 395 362 389 352 421 380 394 382 407 413 411 384 389 400…

Answered: 12. An engineer wants to compare the…

MATLAB: An Introduction with Applications

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ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

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An engineer wants to compare the tensile strengths of steel bars that are produced using a conventional method and an experimental method. (The tensile strength of a metal is a measure of its ability to resist tearing when pulled lengthwise.) To do so, the engineer randomly selects steel bars that are manufactured using each method and records the following tensile strengths (in Newtons per square millimeter). At α=.10, can the engineer claim that the experimental method produces steel with greater mean tensile strength? Should the

engineer recommend using the experimental method? First use the F test to determine whether or not to use

equal variances in choosing the model.(??? ????? ?? ???? ?̅ ??? ? ??? ???ℎ ???ℎ??)

Experimental 395 389 421 394 407 411 389 402 422 416 402 408 400 386 411 405 389

Conventional 362 352 380 382 413 384 400 378 419 379 384 388 372 383

12. An engineer wants to compare the tensile strengths of steel bars that are produced using a conventional
method and an experimental method. (The tensile strength of a metal is a measure of its ability to resist tearing
when pulled lengthwise.) To do so, the engineer randomly selects steel bars that are manufactured using each
method and records the following tensile strengths (in Newtons per square millimeter). At a =.10, can the
engineer claim that the experimental method produces steel with greater mean tensile strength? Should the
engineer recommend using the experimental method? First use the F test to determine whether or not to use
equal variances in choosing the model.(Use Excel to find x and sfor each method)
Experimental 395
Conventional 362
389
421
394
407
411
389
402 422 416
402
408
400 386
411
405 389
352
380
382
413
384
400
378
419
379
384
388
372
383

Expert Solution

Step 1

Experimental	Conventional
395	362
389	352
421	380
394	382
407	413
411	384
389	400
402	378
422	419
416	379
402	384
408	388
400	372
386	383
411
405
389

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