**Determining the Hypotheses**The mean weight of female aerobics instructors in a certain city is equal to 146 lbs. Express the null and alternative hypotheses in symbolic form for this claim.$ H_0 : \mu $ $ H_1 : \mu $ Use the following codes to enter the following symbols:- $ \ge $ enter `>=`- $ \le $ enter `<=`- $ \neq $ enter `!=`

Claim is that the mean weight of female aerobics instructors in a certain city is equal to 146 lbs.

Answered: The mean weight of female aerobics…

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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Is the following a non-directional (two tailed) or directional (one tailed) hypothesis? There are more students in the class who commute to campus than students who do not commute to campus?
Write the null and alternative hypotheses for the following example. Determine if the example is a case of a two-tailed, a left-tailed, or a right-tailed test. To test if the mean credit card debt of college seniors is less than 1000 dollars. Ho: μ = 1000 dollars, H₁: μ1000 dollars, right-tailed test Ho: μ=1000 dollars, H₁: µ1000 dollars, left-tailed test Ho: μ=1000 dollars, H₁: µ‡1000 dollars, two-tailed test
16% of workers got their job through internet resume sites. Express the null and alternative hypotheses in symbolic form for this claim (enter as a percentage).
(a) Determine the null and alternative hypotheses that would be used to test the effectiveness of the marketing campaign. Ho: = μ 56 H₁: μ > 56 (Type integers or decimals. Do not round.) (b) A sample of 884 Americans provides enough evidence to conclude that marketing campaign was effective. Provide a statement that should be put out by the marketing department. O A. There is not sufficient evidence to conclude that the mean consumption of popcorn has risen. B. There is sufficient evidence to conclude that the mean consumption of popcorn has risen. C. There is sufficient evidence to conclude that the mean consumption of popcorn has stayed the same. D. There is not sufficient evidence to conclude that the mean consumption of popcorn has stayed the same.
What is the null and alternative hypotheses for the average weight of dogs is 15.6 pounds?
The mean weight of male aerobics instructors in a certain city is less than 185 lbs. Express the null and alternative hypotheses in symbolic form for this claim.
Let’s assume the average income for all majors in the School of Engineering is $80,000. However, the chair of the Computer Science department thinks their students earn more than that. Please choose the appropriate null and alternative hypotheses if the chair wanted to test this belief. a. H0: u <=80,000 Ha: u > 80,000 b. H0: u= 80000 Ha: u not= 80000 c. H0: u >80000 Ha: u < 80000 d. H0: u >80000 Ha: < 80000 e. None of the above.
13% of all Americans suffer from sleep apnea. A researcher suspects that a different percentage of those who live in the inner city have sleep apnea. Of the 390 people from the inner city surveyed, 70 of them suffered from sleep apnea. What can be concluded at the level of significance of a = 0.10? b. The null and alternative hypotheses would be: Ho: ? 8 Select an answer O |(please enter a decimal) H1: ? E Select an answer O (Please enter a decimal) c. The test statistic ? 6 (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 ? O a f. Based on this, we should Select an answer the null hypothesis.
The average manufacturing work week in metropolitan Chattanooga was 40,1 hours last year. It is believed that the recession has led to a reduction in the average work week. To test the validity of this belief, the hypotheses are O* Họ 2 40.1 Hạ <40.1 ObHọ - 401 H * 40.1
a) Clearly label and state the appropriate null and alternative hypotheses.b) State your evidence-based conclusion in a well written contextual sentence for a general audience– be sure your conclusion is not about rejecting or not rejecting hypotheses as a general audience2. A newspaper report states that the mean age of commercial jets in the United States is 14 years.An executive of AirJet, a large airline company, claims that the mean age of the planes in his company is lower. He selects a sample of 36 planes and find the mean age to be 11.8 years.Assuming his planes is the same as the national average the chance of this outcome is 0.005.
New road signs are made with the intention of improving visibility for drivers. Highway safety engineer’s setup a test course that included both the old and new signs. Volunteers drove the course and rated the old and new signs in terms of visibility. a) Write the null and alternative hypotheses in words using “improved visibility” and “not improved visibility”.b) Describe a Type I error in the context of the problem.c) Describe a Type II error in the context of the problem.
Among a simple random sample of 331 American adults who do not have a four-year college degree and are not currently enrolled in school, 159 said they decided not to go to college because they could not afford school. A. A newspaper article states that only a minority of the American adults who decide not to go to college do so because they cannot afford it and uses the point estimate from this survey as evidence. State the null and alternative hypotheses both in symbols and in words. B. State and check the conditions for the hypothesis test.

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