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 alphaequals0.02, answer parts (a) through (e). Assume the population variances are equal and the samples are random. If convenient, use technology to solve the problem. font size decreased by 1 Start 3 By 2 Table 1st Row 1st Column Treatment 2nd Column Tensile strengths left parenthesis newtons per square millimeter right parenthesis 2nd Row 1st Column Experimental 2nd Column Start 1 By 10 Matrix 1st Row 1st Column 447 2nd Column 433 3rd Column 362 4st Column 413 5st Column 418 6st Column 425 7st Column 364 8st Column 9st Column 10st Column EndMatrix 3rd Row 1st Column Conventional 2nd Column Start 1 By 10 Matrix 1st Row 1st Column 438 2nd Column 397 3rd Column 394 4st Column 409 5st Column 407 6st Column 383 7st Column 402 8st Column 364 9st Column 366 10st Column 371 EndMatrix EndTable 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.)