2. The S.A. Department of Labour and Statistics South Africa released the currentunemployment rate of 5.3% for the month in S.A. and claims the unemployment hasnot changed in the last two months. However, the STATSA reveal that there is achange in S.A's unemployment rate. What are the null and alternative hypotheses?(a) Ho: p > 0.053; H₁: p < 0.053(b) Ho: p = 0.053; H₁: p > 0.053(c) Ho: p = 0.053; H₁: p = 0.053(d) Ho: p = 0.053; H₁: p = 0.053

Let p be the population proportion unemployment rate p=5.3%=0.053

Answered: 2. The S.A. Department of Labour and…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Among those who are 21 years of age, those who have been driving less than 5 years had 10,000 new car accidents in 1 year, while those who had been driving for more than 5 years had 20,000 new car accidents during the same time period. It was concluded from these data that 21-year-olds with more driving experience have increased risk of accidents compared to those who started driving later. This conclusion is: a. Correct b. Incorrect because rates are not reported c. Incorrect because prevalence estimates are given when incidence rates should be reported d. Incorrect because there is no comparison group
In April of 2012, the Centers for Disease Control and Prevention announced that birth rates for U.S. teenag-ers reached historic lows. From 2009 to 2010 the rate declined 9%, to a level of 34.3 births per 1000 womenaged 15–19. Which of these conclusions is an example ofextrapolation in this context?A) There was a decreasing trend in teenage birth ratesat the time of this study.B) Time is an explanatory variable in the change ofteenage birth rates.C) By 2014, teenage birth rates will be 36% lower andset new records.D) There is a linear relationship between year andteenage birth rates.E) None of these is an example of extrapolation.
You may need to use the appropriate appendix table or technology to answer this question. An agency reports that 11.5% of workers in a particular country belonged to unions. Suppose a sample of 300 workers is collected to determine whether union efforts to organize have increased union membership. (a) Formulate the hypotheses that can be used to determine whether union membership has increased. H0: p = 0.115 Ha: p ≠ 0.115 H0: p > 0.115 Ha: p ≤ 0.115 H0: p ≤ 0.115 Ha: p > 0.115 H0: p ≥ 0.115 Ha: p < 0.115 H0: p < 0.115 Ha: p ≥ 0.115 (b) If the sample results show that 36 of the workers belonged to unions, what is the p-value for your hypothesis test? Find the value of the test statistic. (Round your answer to two decimal places.) Find the p-value. (Round your answer to four decimal places.) p-value = (c) At ? = 0.05, what is your conclusion? Do not reject H0. There is insufficient evidence to conclude that there has been an increase in union…
Part 1 of 4 Victoria, an accomplished marathon runner, claims that the standard deviation for her time to run a 26.2 mile marathon is less than 17.5 minutes. To test her claim, Victoria looks up 11 of her race times (in minutes): 227.2, 233.3, 259.7, 265.8, 252.1, 228.8, 222.6, 202.9, 214.5, 237.2, 267.7 Perform a hypothesis test using a 9% level of significance to test Victoria's claim. Step 1: State the null and alternative hypotheses. 17.5 Ha:0
17. A student did not believe their teacher when they stated that students tend to make more mistakes on their homework when listening to music. The students gave 30 participants two tasks: one task was given while the participant performed simple math problems and gave a similar, but different set of math problems when not listening to music. The following is the mean of the difference scores for the two tasks MD=4 and an SEM=1.3 a. State the null and alternative hypothesesb. Perform a paired samples t test with the descriptive statisticsc. Is there a significant difference between the two conditions? Test using an alpha level of .05, using the direction of the test that is listed in the question. Use APA format in answering question.
(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.
A random sample of 1026 adults in a certain large country was asked "Do you pretty much think televisions are a necessity or a luxury you could do without?" Of the 1026 adults surveyed, 533 indicated that televisions are a luxury they could do without. Complete parts (a) through (e) below. (a) Obtain a point estimate for the population proportion of adults in the country who believe that televisions are a luxury they could do without. A p= (Round to three decimal places as needed.)
The owner of a small deli is trying to decide whether to discontinue selling magazines. He suspects that only 8.7% of his customers buy a magazine and he thinks that he might be able to use the display space to sell something more profitable. Before making a final decision, he decides that for one day he will keep track of the number of customers that buy a magazine. (b) Assuming his suspicion that 8.7% of his customers buy a magazine is correct, what is the probability that exactly 3 out of the first 14 customers buy a magazine? Give your answer as a decimal number rounded to two digits.
17. A new prep class was designed to improve SAT test scores. Five students were selected at random. Their scores on two practice exams were recorded, one before the class and one after. The data recorded in Table. Are the scores, on average, higher after the class? Test at a 5% level. (You can use the traditional method or p-value method). Carry your intermediate computations to at least three decimal places. Round your final answer to three decimal places. SAT Scores Student 1 Student 2 Student 3 Student 4 SAT Scores Prior to the Class 1840 1960 1920 2150 SAT Scores After the Class 1920 2160 2200 2100
1. A survey of National Capital Region finds the average commute time of employees on one way is 30 minutes. The Makati Chamber of Commerce feels that in their city is greater and wants to publicizethis. They randomly select 28 commuters and finds the average is 35 minutes with a standard deviation of 6 minutes. At a = 0.05, are they correct? Solution: Step 1: State the hypotheses. Ho:. H: Step 2: The level of significance and critical region. a = df = and tatical = Step 3: Compute for the value of one sample t test. tomputnd %3D Step 4: Decision rule. Step 5: Conclusion.
Consider a population of 1024 mutual funds that primarily invest in large companies. You have determined that u, the mean one-year total percentage return achieved by all the funds, is 9.80 and that o, the standard deviation, is 0.50. Complete (a) through (c). a. According to the empirical rule, what percentage of these funds is expected to be within +2 standard deviations of the mean? 95 % b. According to the Chebyshev rule, what percentage of these funds are expected to be within +2 standard deviations of the mean? 75 % (Round to two decimal places as needed.) c. According to the Chebyshev rule, at least 88.89% of these funds are expected to have one-year total returns between what two amounts? Between and (Round to two decimal places as needed.)
Late payment of medical claims can add to the cost of health care. Suppose 71.7% of the claims were paid in full when first submitted for one insurance company. The insurance company developed a new payment system in an effort to increase this percentage. A sample of 280 claims processed under this system revealed that 223 of the claims were paid in full when first submitted. Complete parts a and b below. a State the appropriate null and alternative hypotheses. Choose the correct answer below. OA. Ho p≤0.717 HA P>0.717 *** OC. Ho p=0.717 HA P#0717 OB. Ho: z≤0.717 HA: Z>0.717 O D. Ho: p20.717 HA: P<0.717

SEE MORE QUESTIONS

Recommended textbooks for you

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

Elementary Statistics: Picturing the World (7th E…

Statistics

ISBN:

9780134683416

Author:

Ron Larson, Betsy Farber

Publisher:

PEARSON

The Basic Practice of Statistics

Statistics

ISBN:

9781319042578

Author:

David S. Moore, William I. Notz, Michael A. Fligner

Publisher:

W. H. Freeman

Introduction to the Practice of Statistics

Statistics

ISBN:

9781319013387

Author:

David S. Moore, George P. McCabe, Bruce A. Craig

Publisher:

W. H. Freeman

SEE MORE TEXTBOOKS