ROBLEM 3 (15 points total). Structural steel alloys are often subjected to an annealing process to improvemachinability. Machinability is associated with lower hardness. As part of process characterization for a new annealingprocess, the hardness of n = 10 individually marked test coupons were measured both before and after the annealingcycle. The engineering team wants to know whether the annealing process resulted in a statistically significant changeinA) State the appropriate null and alternative hypotheses for a two-sided test.B) Compute the test statistic for your null hypothesis.C) Compute (or place a bound) on the p-value for your test outcome.D) Based on the p-value, what conclusion do you draw regarding the null hypothesis? Is there sufficient evidencethat demonstrates that the annealing process changes hardness to a statistically significant degree at the a=0.05level of significance? whatAfter1 321.6 296.02 299.4318.33 309.6323.94 312.8305.15 335.3314.86 324.9314.27318.9311.28 318.3320.39 320.9316.010322.0295.4Sample ID Before...face ofBefore - AfterDifference25.6-18.9-14.37.720.510.77.7-2.04.926.66.915.4MeanStdev

Given that n = 10 , df = n - 1 = 10 - 1 = 9 Note: According to bartleby experts question answers…

Answered: A) State the appropriate null and…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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(c) Calculate the test statistic. d) Decide whether to reject or fail to reject the null hypothesis. Then interpret the decision in the context of the original claim.
Which of the following is the first step in hypothesis testing? (a) Developing a null and alternative hypothesis. (b) Drawing a sample from the population. (c) It does not matter where you begin when you test hypotheses. (d) Setting the cutoff value for rejecting the null hypothesis.
B. Identify the test statistic test C. Identify the P-value for this hypothesis test D. If P-value is reject H0 or fail to reject H0?
Suppose you have a hypothesis test which never rejects the null hypothesis, no matter the value of the test statistic. Name a potential problem with such a test. Select one: a. There can be no problem with such a hypothesis test, this is the ideal scenario. b. Using this test would lead to making an excessive number of Type I errors. c. Using this test would lead to making an excessive number of Type II errors.
Passed Failed White Results from a civil servant exam are shown in the table to the right. Is there sufficient evidence to support the claim that the results from the test are discriminatory? Use a 0.05 significance level. 16 14 candidates Minority candidates 7 21 Determine the null and alternative hypotheses. O A. Ho: White and minority candidates do not have the same chance of passing the test. H4: White and minority candidates have the same chance of passing the test. B. Ho: A white candidate is more likely to pass the test than a minority candidate. H,:A white candidate is not more likely to pass the test than a minority candidate. Ho: A white candidate is not more likely to pass the test than a minority candidate. H,: A white candidate is more likely to pass the test than a minority candidate. D. Ho: White and minority candidates have the same chance of passing the test. H,: White and minority candidates do not have the same chance of passing the test. Determine the test…
H.P. statistician, please show work and neat handwriting
A university has decided to introduce the use of plus and minus grading as long as there is evidence that 60% of the faculty is in support of this change. Write an appropriate null hypothesis and alternate hypothesis to test if the proportion is greater than 60%.
1.) Identify the null and alternative hypotheses for this test. 2.) Identify the test statistic for this hypothesis test. (Round to two decimal places as needed.) 3.) Identify the P-value for this hypothesis test. (Round to three decimal places as needed.) 4.) Identify the conclusion for this hypothesis test.
4. Explain the procedure for testing a hypothesis using the P-value approach? What is the criterion for judging whether to reject the null hypothesis?

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A) State the appropriate null and alternative hypotheses for a two-sided test. B) Compute the test statistic for your null hypothesis. C) Compute (or place a bound) on the p-value for your test outcome.