For each hypothesis test you complete, please answer questions (a) through (i) listed below. (a)What conditions should you check first before you con- duct the hypothesis test? (b) Write the null and...

For each hypothesis test you complete, please answer questions (a)
through (i) listed below.
(a)What conditions should you check first before you con-
duct the hypothesis test?
(b) Write the null and alternative hypotheses.
(c) What type of test are you doing: right-tailed, left-tailed
or two-tailed?
(d) What formula should be used for the test statistic?
(e) What number is the test statistic equal to?
(f) Sketch a graph of the p-value
(g) What p-value do you obtain? Round to the ten-thousandths.
(h) Do you reject the null hypothesis or fail to reject the
null hypothesis? Explain.
(i) Please write a conclusion sentence, in the context of the
problem, that explains to a lay person the result of the hypothesis
test.

2. Tensile Strength The tensile strength of a metal is a mea-
sure of its ability to resist tearing when it is pulled lengthwise. A new
experimental type of treatment produced steel bars with the tensile
strengths (in newtons per square millimeter) listed attatched.

At α= 0.01, can you support the claim that the new treatment makes a
difference in the tensile strength of steel bars? Assume the population
variances are equal, and that all variables are normally distributed.

Please answer G H I

Extracted text: Experimental Method: 391 383 333 378 368 401 339 376 366 348 The old method produced steel bars with the tensile strengths (in new- tons per square millimeter) listed below. Old Method: 362 382 368 398 381 391 400 410 396 411 385 385 395