part d. decide wheater to reject of fail to reject the null hypothesispart e. Interpret the decision in context of the original claim An engineer wants to know if producing metal bars using a new experimental treatment rather than the conventional treatment makes a difference in the tensile strength of the bars (the ability to resist tearing when pulledlengthwise). At x = 0.01, 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 419 423 415 417 363 385 364Conventional 444 361 407 415 432 358 410 410 363 406(a) Identify the claim and state Ho and HaThe claim is "The new treatmentin the tensile strength of the bars." (a) Identify the claim and state Ho and HaThe claim is "The new treatmentWhat are Ho and H₂?The null hypothesis, Ho, isin the tensile strength of the bars."Which hypothesis is the claim?/TThe alternative hypothesis, H₂, is(b) Find the critical value(s) and identify the rejection region(s).Enter the critical value(s) below.The null hypothesis, HoThe alternative hypothesis, Hat =Select the correct rejection region(s) below.OA. t< - to, t>toB. t> toc. -to

Given data Treatment Tensile strength Experimental 419 423 415 417 363 385 364…

Answered: An engineer wants to know if producing…

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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Which of the following hypothesis is considered one tail test? a. O b. c. O d. H1: µ ≤75 HO: μ 75 HO: p=75
20. Which of the following is a null hypothesis? a. Pregnant women who drink cranberry juice will have lower urine bacterial counts than those who do not drink cranberry juice. b. The urine bacterial count of pregnant women who drink cranberry juice will be lower or equal to that of pregnant women who do not drink the juice. c. There will be a difference between ingestion of cranberry juice and among pregnant women who do and do not have high urine bacterial counts.
2. A Type Il error is committed when A. we reject a null hypothesis that is true. B. we retain a null hypothesis that is true. C. we reject a null hypothesis that is false. D. we retain a null hypothesis that is false.
Determine whether the claim stated below represents the null hypothesis or the alternative hypothesis. If a hypothesis test is performed, how should you interpret a decision that (a) rejects the null hypothesis or (b) fails to reject the null hypothesis? A researcher claims that less than 13% of people had no health care visits in the past year. Does the claim represent the null hypothesis or the alternative hypothesis? Since the claim ▼ does not contain contains a statement of equality, it represents the ▼ alternative null hypothesis. (a) How should you interpret a decision that rejects the null hypothesis? There is ▼ sufficient insufficient evidence to ▼ support reject the claim that less than 13% of people had no health care visits in the past year. (b) How should you interpret a decision that fails to reject the null hypothesis? There is ▼ insufficient sufficient evidence to ▼ support reject the…
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In Bloomington, they randomly sampled 260 female voters, and 190 male voters. They collected data on the respondent's opinion on an environmental bond issue. We want to know whether there is good evidence that one's gender influences whether a person is for or against the bond issue. Use α = 0.05. For Bond Issue Against Bond Issue Total 52 260 17 190 69 450 Men Women Total a) What is the correct null hypothesis? O Ho: P₁ P2 P3 P4 O Ho: P₁ P2 = P3 P4 O Ho: Gender and Bond Issue Attitudes are Independent. O Ho: Gender and Bond Issue Attitudes are dependent. b) Fill in the expected values, round answers to 1 decimal place. For Bond Issue Against Bond Issue Expected Values Men Women c) Chi Square Test Statistic = 208 173 381 Degree's of Freedom = d) The p-value = 1 decimal place 3 decimal places e) What is the correct conclusion? O Because the p-value is greater than alpha, we reject the Ho. There is statistical evidence that attitudes on the bond issue are dependent on gender. O Because…
Whenever possible, the alternative hypothesis should O incorporate the researcher's hypothesis. O not include an equality. all of the above. be the complement to the null hypothesis.
In most judicial systems, a defendant is innocent until proven guilty. An attorney defends the null hypothesis that his client, the defendant, is innocent. From the judge’s point of view, what are the implications of making the following types of errors? A Type I error A Type II error
What is also the rejection criteria?
Accepting a true Alternate Hypothesis is Select one: a. Type I error b. Type II error c. both of these d. none of these Clear my choice
Suppose a storeowner assumes that all his employees are honest; however, shortages in the cash received have been frequent in the past weeks. There is a possibility that one of the employees take the extra cash. The owner does not know whether to accuse or just let the situation pass since the shortage could be due accidental tendering of incorrect change to customers. a. State the null and alternative hypothesis in words. b. Describe the Type I or II error. c. Which do you think is the most serious error? Explain.

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