An engineer wiants lo know if producing melal bars using a new experimental treatment rather than the conventional fresatiment makes a difference in the fensile strength of the bars (the ability to resist learing when pulled lenglhwise) A Assume the population variancos are equal and the samples are random. If convenient, use tectinology to solve the problem. Troatment Tenste sirengths (newtons per square milimeler) Experimontal 394 392 448 400 423 432 409 Converilional 446 362 357 383 418 386 382 437 364 446 (a) Identify the claim and state Hp and H, The claim is "The new treatment in the tensile strength of the bars What are Hn and H,? The null hypothesis, Hg, is The alternatve hypothesis, H,, is Which hypothesis is Ihe daim? O The alterrative hypothesis, H O The null hypothesis, H (b) Find the cntical value(s) and identify the rejextion region(s) Enter the cntical valuc(s) below. (Type an integer or decimal rounded to three decimal places as nceded. Une a comma to separate answers as neoded) Sekoct the correct rejection region(s) below

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Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.