(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
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
Please answer G H I
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