content area top Part 1 An engineer wants to know if producing metal bars using a new experimental treatment rather than the conventional treatment makes a difference in the tensile strength of the bars (the ability to resist tearing when pulled lengthwise). At alphaequals0.05, answer parts (a) through (e). Assume the population variances are equal and the samples are random. If convenient, use technology to solve the problem. Experimental Treatment Conventional Treatment 432 445 398 404 356 387 417 446 404 367 372 409 420 354 431 431 401 a) Identify the claim and state Upper H 0 and Upper H Subscript a. The claim is "The new treatment makes a difference does not make a difference in the tensile strength of the bars." Part 2 What are Upper H 0 and Upper H Subscript a? The null hypothesis, Upper H 0, is mu 1 equals mu 2 mu 1 less than or equals mu 2 mu 1 greater than or equals mu 2 . The alternative hypothesis, Upper H Subscript a, is mu 1 not equals mu 2 mu 1 greater than mu 2 mu 1 less than mu 2 . Part 3 Which hypothesis is the claim? The null hypothesis, Upper H 0 The alternative hypothesis, Upper H Subscript a Part 4 (b) Find the critical value(s) and identify the rejection region(s). Enter the critical value(s) below. enter your response here (Type an integer or decimal rounded to three decimal places as needed. Use a comma to separate answers as needed.)