A gaussian curve states that its average is 452.22 and a standard deviation of 12.5.What would be a proper null Hypothesis for this?Ho 452.22 (the average)Ho12.5 (the standard deviation)Ho = 464.72 (the average plus the standard deviation)Ho= 439.72 (the average minus the standard deviation)

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Answered: A gaussian curve states that its…

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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> Question 11 A random sample of size 40 yields a standard deviation of 6. At a = 0.10, test the claim that the population standard deviation is not 4. 1. The alternate hypothesis is Ha: Οσ#6 Oo + 4 2. This is a OleftO twoO right tailed test with d.f. = 3a. The STS (to 2 decimals) is X 3b. The P-value (to 3 decimals) is: 4a. At a = 0.10, the decision is: O Accept Ho O Do not reject Ho O Reject Ho O Accept Ha 4b. The conclusion is: O There is insufficient evidence to support the claim that population standard deviation is not 4 O There is sufficient evidence to support the claim that population standard deviation is not 4 O There is sufficient evidence to reject the claim that population standard deviation is not 4 OThere is insufficient evidence to reject the claim that population standard is not 4 MacBook Air F2 F3 000 F4 F5 F6 F7 F8 F9 2$ & 3 5
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Question 4 Use the empirical rule to solve the problem. The amount of Jen's monthly phone bill is normally distributed with a mean of $58 and a standard deviation of $12. What percentage of her phonė bills are between $22 and $94? O 99.99% O 99.7% O 68% O 95% « > A Moving to another question will save this response. 4:42 PM rch 3/25/2021 DII FS PrtScn Home F9 End F10 PgUp PgDn F11 F12 F6 F7 F8 4. 5 6 8. 9. E R T Y U D F G H J K L
answer 3
A sample of 200 people has a mean age of 21 with a population standard deviation (σ) of 5. Test the hypothesis that the population mean is 18.9 at α = 0.05.
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what is the value of (M-m)?
A random sample of 82 eighth grade students' scores on a national mathematics assessment test has a mean score of 286. This test result prompts a state school administrator to declare that the mean score for the state's eighth graders on this exam is more than 280. Assume that the population standard deviation is 38. At α = 0.05, is there enough evidence to support the administrator's claim? Complete parts (a) through (e). (a) Write the claim mathematically and identify Ho and H₂. Choose the correct answer below. O A. Ho: μ≤280 (claim) H₂:μ>280 O D. Ho: μ≤280 Ha: μ> 280 (claim) O B. Ho: μ280 OF. Ho: μ = 280 Ha: μ>280 (claim)
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From generation to generation, the mean age when smokers first start to smoke varies. However, the standard deviation of that age remains constant at around 2.1 years. A survey of 38 smokers of this generation was done to see if the mean starting age is at least 19. The sample mean was 18.1 with a sample standard deviation of 1.3. Do the data support the claim at the 5% level? What is the test statistic? (If using the z distribution round your answers to two decimal places, and if using the t distribution round your answers to three decimal places.)
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A gaussian curve states that its average is 452.22 and a standard deviation of 12.5. What would be a proper null Hypothesis for this? Ho 452.22 (the average) Ho 12.5 (the standard deviation) Ho = 464.72 (the average plus the standard deviation) Ho= 439.72 (the average minus the standard deviation)