The breaking strengths of cables produced by a certain company are approximately normally distributed. The company announced that the mean breakingstrength is 2120 pounds with a standard deviation of 180. A consumer protection agency claims that the actual standard deviation is higher. Suppose that theconsumer agency wants to carry out a hypothesis test to see if its claim can be supported. State the null hypothesis Ho and the alternative hypothesis H, theywould use for this test.LРHo: OH₁: 0SFO0<0Checkesc!@2↑#m3C$4

Given,Mean(μ)=2120population standard deviation(σ)=180

Answered: The breaking strengths of cables…

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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The records of a casualty insurance company show that, in the past, its clients have had a mean of 1.9 auto accidents per day with a standard deviation of 0.05. The actuaries of the company claim that the standard deviation of the number of accidents per day is no longer equal to 0.05. Suppose that we want to carry out a hypothesis test to see if there is support for the actuaries' claim. State the null hypothesis H0 and the alternative hypothesis H1 that we would use for this test.
Use the following prompt to answer the MEDICINE questions. A nighttime cold medicine's label indicates the presence of 600 mg of acetaminophen in each fluid ounce of the drug. The FDA randomly selects 75 1-ounce samples and finds the mean content is 593 mg with a standard deviation of 22 mg. Is there evidence that the label is incorrect? Use a= .10. Question 2 MEDICINE Select the appropriate null and alternative hypothesis. O Ho: H₁600 HA: H1600 O Ho: M₁ = 600 HA: H₁ = 600 O Ho: H₁ = 600 HA: H₁>600 Question 3 MEDICINE Calculate the test statistic for this hypothesis test. Question 4 MEDICINE Select the appropriate critical value(s). O +1.645 O +1.282 O 1.96 O 1.645 Question 5 MEDICINE What is the conclusion for this hypothesis test?
The records of a casualty insurance company show that, in the past, its clients have had a mean of 1.9 auto accidents per day with a standard deviation of 0.04. The actuaries of the company claim that the standard deviation of the number of accidents per day is no longer equal to 0.04. Suppose that we want to carry out a hypothesis test to see if there is support for the actuaries' claim. State the null hypothesis H0 and the alternative hypothesisH1 that we would use for this test.
You may need to use the appropriate appendix table or technology to answer this question. A magazine conducts an annual survey with higher values indicating better service. A sample of 34 ships that carry fewer than 500 passengers resulted in an average rating of 85.33, and a sample of 44 ships that carry 500 or more passengers provided an average rating of 81.80. Assume that the population standard deviation is 4.55 for ships that carry fewer than 500 passengers and 3.97 for ships that carry 500 or which readers rate their favorite cruise ship. All ships are rated on a 100-point scale, more passengers. (a) What is the point estimate of the difference between the population mean rating for ships that carry fewer than 500 passengers and the population mean rating for ships that carry 500 or more passengers? (Use smaller cruise ships - larger cruise ships.) (b) At 95% confidence, what is the margin of error? (Round your answer to two decimal places.) (c) What is a 95% confidence interval…
Currently patrons at the library speak at an average of 66 decibels. Will this average decline after the installation of a new computer plug in station? After the plug in station was built, the librarian randomly recorded 66 people speaking at the library. Their average decibel level was 63.2 and their standard deviation was 18. What can be concluded at the the a = 0.10 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ?v Select an answer v Hị: Select an answer c. The test statistic ? v (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is ? va f. Based on this, we should Select an answer g. Thus, the final conclusion is that ... | the null hypothesis. OThe data suggest that the population mean decibal level has not significantly decreased from 66 at a = 0.10, so there is statistically insignificant evidence to conclude that the…
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Use calculator t3 .
The records of a casualty insurance company show that, in the past, its clients have had a mean of 1.9 auto accidents per day with a standard deviation of 0.04 . The actuaries of the company claim that the standard deviation of the number of accidents per day is no longer equal to 0.04. Suppose that we want to carry out a hypothesis test to see if there is support for the actuaries' claim. State the null hypothesis H0 and the alternative hypothesis H1 that we would use for this test. H0 : __? H1 : __?
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