An engineer wants to know if producing metal bars using a new experimental treatment rather than treatment makes a difference in the tensile strength of the bars (the ability to resist tearing when pulled lengthwise). a=0.10, answer parts (a) through (e). Assume the population variances are equal and the samples are random. If convenient, use technology to solve the problem. Treatment Tensile strengths (newtons per square millimeter) Experimental 437 404 394 359 446 361 385 Conventional 401 363 436 387 437 431 429 369 400 415 (a) Identify the claim and state Ho and Ha The claim is "The new treatment What are Ho and Ha? www in the tensile strength of the bars." The null hypothesis, Ho, is The alternative hypothesis, Ha, is Which hypothesis is the claim? The null hypothesis, Ho O The alternative hypothesis, Ha (b) Find the standardized test statistic. t= (Type an integer or decimal rounded to the nearest thousandth as needed.) (c) Decide whether to reject or fail to reject the null hypothesis. the null hypothesis. (d) Interpret the decision in the context of the original claim. At the 10% significance level, enough evidence to support the claim. there is not