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.
In each part, we have given the significance level and the P-value for a hypothesis test. For each case determine if the null hypothesis should be rejected. Write "reject" or "do not reject" (without quotations - if you like use copy and paste to avoid typos). (a) α= 0.01, P = 0.06 answer: (b) a = 0.06, P = 0.001 answer: (c) a = 0.07, P = 0.06 answer:
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.
The P-value for a hypothesis test is shown. Use the P-value to decide whether to reject Ho when the level of significance is (a) a = 0.01, (b) a = 0.05, and (c) a = 0.10. P= 0.0961 (a) Do you reject or fail to reject Ho at the 0.01 level of significance? O A. Reject Ho because the P-value, 0.0961, is greater than a =0.01. O B. Fail to reject Ho because the P-value, 0.0961, is greater than a = 0.01. O C. Reject Ho because the P-value, 0.0961, is less than a = 0.01. O D. Fail to reject Ho because the P-value, 0.0961, is less than a = 0.01. (b) Do you reject or fail to reject Ho at the 0.05 level of significance? O A. Fail to reject Ho because the P-value, 0.0961, is less than a = 0.05. O B. Fail to reject Ho because the P-value, 0.0961, is greater than a = 0.05. O C. Reject Ho because the P-value, 0.0961, is less than a = 0.05. O D. Reject Ho because the P-value, 0.0961, is greater than a = 0.05. (c) Do you reject or fail to reject Ho at the 0.10 level of significance? O A. Fail to…
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…
Which hypothesis test would be appropriate to determine whether the new variety of orange has a significantly higher content of vitamin C than the variety that is currently the top seller? Do NOT perform a hypothesis test – simply tell me which test should be used, why you chose this test, and give the formula for the test statistic.
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%.
The blue catfish (Ictalurus Furcatus) is the largest species of North American catfish. The current world record stands at 143 pounds, which was caught in the John H. Kerr Reservoir (Bugg's Island Lake) located in Virginia. According to American Expedition, the average weight of a blue catfish is between 20 to 40 pounds. Given that the largest blue catfish ever caught was at the John H. Kerr Reservoir, you believe that the mean weight of the fish in this reservoir is greater than 40 pounds. Use the data below, which represents the summary statistics for 42 blue catfish caught at this reservoir, and a 0.05 significance level to test the claim that the mean weight of the fish in the John H. Kerr Reservoir is greater than 40 pounds. n = 42; a = 40.51 pounds; s = 2.99 pounds a) Identify the null and alternative hypotheses? Но: ? На: ?
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.

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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.