Math 110 Ch 8 Class Work1. A research claims 45% of the households have streaming devices. State the following:Claim, Opposite, Ho, H₁. Which type of test would you use?8.1Pg3If the test statistic: z = 2.15, draw the normal distribution curves anda) Use Critical Value Method, at a = 0.01, do you reject or fail to reject Ho?8.2 48.3Pg 4b) Use P-value Method, at a = 0.05, do you reject or fail to reject Ho?2. A randomly selected 580 employed adults with 464 of them saying they are satisfied with their job. Use a 0.05significance level to test the claim that more than 75% of workers are satisfied with their job.alphaStep 1-3) Claim, Opposite, Ho, H₁froportionHo p≤ 75H. p7.75ClaimP7-75appe. PL.75Step 4) a= 0.05Critical Value: 1-(45Step 5) Test Statistic:Calculator Go to Stats, TestStep 6) Choose one method: Critical value or P-value test (P-value=_Circle One: reject Ho or fail to reject HoStep 7) Conclusion: There'sthan 75% of workers are satisfied with their job.evidence tothe claim that more

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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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Discuss the difference between the 95% and 99% confidence levels. What are the corresponding alpha levels and how confident is the researcher in the results? Edit View Insert Format Table 12pt ✓ | P ▸ Paragraph B IU A ✓T²✓ 岬くく描く To B √x www 11 ✓
help with 2a-f
How can I analyze these graphs?
Also need to find the standardized test statistic, decide whether to reject or fail to reject, and interpret the decision in the context of the claim.
1. what these statistics tell you about the skewness of the variables.
Rivets. A company that manufactures rivets believesthe shear strength of the rivets they manufacture followsa Normal model with a mean breaking strength of 950pounds and a standard deviation of 40 pounds.a) What percentage of rivets selected at random willbreak when tested under a 900-pound load? b) You’re trying to improve the rivets and want to exam-ine some that fail. Use a simulation to estimate how many rivets you might need to test in order to findthree that fail at 900 pounds (or below).
Use technology and a t-test to test the claim about the population mean at the given level of significance a using the given sample statistics. Assume the population is normally distributed Claim: u > 78; a = 0.01 Sample statistics: × = 79.3, s = 3.6, n = 28 What are the null and alternative hypotheses? Choose the correct answer below. O A. Ho: M = 78 H: 4*78 О c. Ha: u₴78 Hai n< 78 OB. H: 4478 H: M=78 O D. H: 4 s78 H: 4>78 What is the value of the standardized test statistic? The standardized test statistic is__ . (Round to two decimal places as needed.) What is the P-value of the test statistic? P-value=__(Round to three decimal places as needed.) Decide whether to reject or fail to reject the null hypothesis. Choose the correct answer below.
Use technology to help you test the claim about the population mean, u, at the given level of significance, a, using the given sample statistics. Assume the population is normally distributed Claim: 1180; a=0.06: a202.19. Sample statistics x= 1208.77, n=300 Identify the null and alternative hypotheses. Choose the correct answer below. OA H 1208.77 H1208.77 OC. H₂>1208.77 H:Hs 1208.77 OE H:1208.77 H₂>1208.77 Calculate the standardized test statistic The standardized test statistic in (Round to two decimal places as needed) Determine the P-value P= (Round to three decimal places as needed.) Determine the outcome and conclusion of the test Ho. At the 6% significance level, there enough evidence to OB. Hop21180 H₂1180 OD. Hus 1180 H₂>1180 OF H₂1180 Hps 1180 the claim
Ee 449.
Analysts of traffic control systems believe that the average speed of heavy vehicles on highways has decreased after passing an ordinance of high penalty to regulate over speeding. The average speed for a random selection of 36 trucks was found to be 55 mph with a standard deviation of 5 mph. The speed before the ordinance was passed was an average of up to 57 mph on these highways.Compute the value of the test statistic. Group of answer choices 0.40 -0.40 2.40 -5.37 -2.40

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