company that manufactures batteries used in electric cars is reporting that their newest model of battery has a mean lifetime, u, 15 years. To test the company's claim, a competitor has selected 62 of these batteries at random. The mean lifetime of the ample is 13.9 years. Suppose the population standard deviation of these lifetimes is known to be 3.7 years. 2021 s there enough evidence to reject the claim that the mean lifetime of the newest model is 15 years? Perform a hypothesis test, sing the 0.05 level of significance. r.jpg (a) State the null hypothesis Ho and the alternative hypothesis H,. O

company that manufactures batteries used in electric cars is reporting that their newest model of battery has a mean lifetime, u, 15 years. To test the company's claim, a competitor has selected 62 of these batteries at random. The mean lifetime of the ample is 13.9 years. Suppose the population standard deviation of these lifetimes is known to be 3.7 years. 2021 s there enough evidence to reject the claim that the mean lifetime of the newest model is 15 years? Perform a hypothesis test, sing the 0.05 level of significance. r.jpg (a) State the null hypothesis Ho and the alternative hypothesis H,. O

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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23. The statement “If there is sufficient evidence to reject a null hypothesis at the 5% significance level, then there is sufficient evidence to reject it at the 10% significance level” is (A) Always True (B) Never True (C) Sometimes True; the p-value for the statistical test needs to be provided for a conclusion (D) Not Enough Information; this would depend on the type of statistical test used If you feel the answer is none of the choices given, submit no answer to the question.
This is part 'd' that isn't included in the picture. (d)Based on your answer to part (c), choose what can be concluded, at the 0.05 level of significance, about your claim. Since the p-value is less than (or equal to) the level of significance, the null hypothesis is rejected. So, there is enough evidence to support the claim that the percentage of software engineers who rate the company they work for as "a great place to work" is not 92% . Since the p-value is less than (or equal to) the level of significance, the null hypothesis is not rejected. So, there is not enough evidence to support the claim that the percentage of software engineers who rate the company they work for as "a great place to work" is not 92% . Since the p-value is greater than the level of significance, the null hypothesis is rejected. So, there is enough evidence to support the claim that the percentage of software engineers who rate the company they work for as "a great place to work" is…
Based on certain data, a null hypothesis is rejected atthe 0.05 level of significance. Would it also be rejectedat the(a) 0.01 level of significance;(b) 0.10 level of significance?
Is there a relationship between the number of votes received by candidates for public office and the amount spent on their campaigns? Candidate Amount spent (000) Votes received (000)Weber $3 14Taite $4 7Spencer $2 5Lopez $5 12 Using a 0.01 significance level, do the formal hypothesis test (using critical values).Remember to show your steps (including all relevant information) please show the steps on how to solve it. ( no excel please)
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?
If we reject the null hypothesis, can we claim to have proved that the null hypothesis is false? Why or why not? Choose the correct answer below. O A. Yes, if the test conditions are satisfied and the p-value is smaller than the significance level, then the null hypothesis is proven to be false. B. Not necessarily, if the test conditions are satisfied and the p-value is appropriately small, the null hypothesis can only be proven false if the significance level is appropriately small. C. Not necessarily, if the test conditions are satisfied and the p-value is appropriately small, the null hypothesis can only be proven false if the power is appropriately large. O D. No; we don't use prove because we cannot be 100% sure of conclusions based on chance processes.
Is there a relationship between the number of votes received by candidates for public office and the amount spent on their campaigns? Candidate Amount spent (000) Votes received (000)Weber $3 14Taite $4 7Spencer $2 5Lopez $5 12Using a 0.01 significance level, do the formal hypothesis test (using critical values).Remember to show your steps (including all relevant information) show the steps on how to solve it
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?
Can you give a specific example of possible wording of both a null and research hypothesis?
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%.
how do I explain the following? 1. Explain p-value In hypothesis testing , why can’t the null hypothesis be proved true? 2. Explain SignificanceExplain what is meant by a significant difference.
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