A personnel director in a particular state claims that the mean annual income is greater in one of the state's coundies (county A) than it is in another county (county B) In County A a random sampleof 17 residents has a mean annual income of $40,300 and a standard deviation of $8100 In County B, a random sample of 8 residents has a mean annual income of $38.500 and a standarddeviation of $5700 At a 0.05, answer parts (a) through (e) Assume the population variances are not equal. If convenient, use technology to solve the problem(a) identify the claim and state H and HWhich is the correct claim below?OA "The mean annual income in county A is less than in county BOB. The mean annual incomes in countes A and B are equal"OC. The mean annual income in county A is greater than in county B.OD. The mean annual incomes in countes A and B are not equalWhat are H, and H₂?The nut hypothesis. Hy isWhich hypothesis is the clam?The null hypothesis H₂The alternative hypothesis, H,(b) Find the critical value(s) and identify the rejection region(s)Enter the critical value(s) below(Type an integer or decimal rounded to three decimal places as needed Use a comma to separate answers as needed)Select the correct rejection region(s) belowOA-64146OB PE Select the correct rejection region(s) below.OA. -toOC. 1<- 6.16OD. 1<-b(c) Find the standardized test statistic.1# (Type an integer or decimal rounded to three decimal places as needed.)(d) Decide whether to reject or fail to reject the null hypothesis.the null hypothesis.(e) Interpret the decision in the context of the original claim.At the 5% significance level,enough evidence to support the personnel director's claim.

Note: According to Bartleby expert guidelines, we can answer only first question with their three…

Answered: (a) identify the claim and state H, 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

Twins In 2009 a national vital statistics report indicatedthat about 3% of all births produced twins. Is the rateof twin births the same among very young mothers?Data from a large city hospital found that only 7 sets oftwins were born to 469 teenage girls. Test an appropriatehypothesis and state your conclusion. Be sure theappropriate assumptions and conditions are satisfiedbefore you proceed.
Residence in the city are charge for water usage every three months the water bill is computed from a common fee along with the amount of water the customer uses the last water bill for 40 residence from two different neighborhoods are shown in the histogram below. which of the following is a true statement comparing the water bills of the two neighborhoods? more homes on front Street had water bills above 225 then on Pine Road more homes on Pine Road had water bills under 150 then on front Street more homes on Pine Road had water bill is above 200 then on front Street The same number of homes on both streets had water bills between 175 and 200
6. A sports analogy for hypothesis tests In recent years, professional sports have incorporated the use of instant replay in order to dispute questionable calls by the referees. For example, in the National Football League (NFL) a head coach is allowed to challenge the referees’ decision twice per game. In order for the referees to reverse their original decision, the instant replay must exhibit clear evidence to the contrary. Suppose the referees rule that a pass was caught in bounds. The head coach of the opposing team believes the player stepped out of bounds before completely catching the ball, and the coach challenges the referees’ decision. The referees will review all available evidence (video taken from different camera angles) and make a decision. If there is evidence beyond a reasonable doubt that their original call was incorrect, the play will be called an incomplete pass. However, if there is no clear evidence to contradict the original call, the play will remain…
Express the alternative hypothesis in symbolic form. A psychologist claims that the mean amount of time (in hours) that females spend in talk therapy is more than that of men. Assume that two samples are independent. Let the female talk therapy times be the first population and the male talk therapy times be the second population.
Which statement is accurate about the relationship between Populations and Samples? It is easier to test the entire population than to make inferences from a sample. If a sample is selected randomly from a population then it will be exactly equal to the population. Any difference between the population and the sample is known as sampling error All 3 statements are true
A student compared organic food prices at Grocery 1 and Grocery 2. The same items were priced at each store. The first three items are shown in the accompanying Figure A. Choose the correct accompanying output (B or C) for the appropriate test, explaining why you chose that output. Then test the hypothesis that the population means are not equal using a significance level of 0.05. Assume i Figure A and Outputs Click the icon to view Figure A and the outputs. Which is the correct output (B or C) for the appropriate test? Explain. (Figure A) Food Grocery 1 0.89 Grocery 2 0.99 A. Output B is appropriate because the data are paired samples. Bananas/1 Ib Grape tomatoes/1 Ib Russet potato/5 Ib 4.19 4.49 B. Output C is appropriate because there are two samples. 4.69 4.49 C. Output B is appropriate because n2 25. (Figure B) D. Output C is appropriate because the data are independent samples. N Mean StDev SE Mean Test the hypothesis that the population means are not equal using a significance…
Q2 ANOVA The following side-by-side box plots show the prices (in thousands) of 48 houses in Corvallis, OR. The houses are divided into age categories: N = New (0-24 years old), M = Medium (25-50 years old), O = Old (50-75 years old), and VO = Very Old (75+ years old). Each category contains 12 randomly selected homes. House Price in Thousands 500- 400- 300 200- 100- Q2.1 M ó Age Category vo TRUE or FALSE: All categories contain at least one outlier. O True O False
Question Help For the given claim, complete parts (a) and (b) below. Claim The mean weight of beauty pageant winners is 115 pounds A study of 20 randomly selected beauty pageants resulted in a mean winner weight of 117 pounds a. Express the original claim in symbolic form.
Player RBI HR AVG Salary (in millions) Prince Fielder 44 8 0.212 18.000 Jean Segura 64 20 0.320 2.600 Logan Forsythe 52 20 0.264 2.750 Chris Iannetta 24 7 0.210 4.550 Adam Jones 83 29 0.265 16.000 Curtis Granderson 59 30 0.237 16.000 Jason Heyward 49 7 0.230 21.667 Hanley Ramirez 111 30 0.286 22.750 David Ortiz 127 38 0.315 16.000 Matt Wieters 66 17 0.243 15.800 Colby Rasmus 54 15 0.206 15.800 Rajai Davis 48 12 0.249 5.950 Mike Trout 100 29 0.315 16.083 Troy Tulowitzki 79 24 0.256 20.000 Justin Smoak 34 14 0.217 3.900 Adrian Beltre 104 32 0.300 18.000 Matt Holliday 62 20 0.246 17.000 Hunter Pence 57 13 0.289 18.500 Brian McCann 58 20 0.242 17.000 J.D. Martinez 68 22 0.307 6.750 Ryan Braun 91 31 0.305 20.000 Mark Teixeira 44 15 0.204 23.125 Victor Martinez 86 27 0.289 18.000 Justin Upton 87 31 0.246 22.125 Carlos Gonzalez 100 25 0.298 17.454 Determine the correlation coefficient. (Round your answer to 4 decimal places.) Find the…
Express the alternative hypothesis in symbolic form. An automobile technician claims that the mean amount of time (in hours) per domestic car repair is more than that of foreign cars. Assume that two samples are independent. Let the domestic car repair times be the first population and the foreign car repair times be the second population. O A. H H1 = H2 O B. H 1 42. O C. H H1 #P2 O D. H: P1
The mean is less than the median. This histogram is negatively-skewed. O The mean is less than the median. This histogram is positively-skewed. O The median is less than the mean. This histogram is negatively-skewed. QUESTION 13 The distributions of income in the United States is strongly skewed to the right. Which of the following is true? O The median income is smaller than the mean income. O The median income is larger than the mean income. O The median income is equal to the mean income. O There is not enough information to compare the median and mean values. QUESTION 14 Click Save and Submit to save and submit. Click Save All Answers to save all answers. Worksheet Py....docx Reading - Ma W MLK Letter -2.pdf Worksheet - W....docx W Anom doon MOS nI DIC. étv 11
A baseball team claims that the mean length of its games is more than 1.4 hours. State H0 and Ha in words and in symbols. Then determine whether the hypothesis test for this claim is left-tailed, right-tailed, or two-tailed. Explain your reasoning. State the null hypothesis in words and in symbols. Choose the correct answer below. A. The null hypothesis expressed in words is, "the mean length of a baseball team's games is not 1.4 hours." The null hypothesis is expressed symbolically as, "H0: μ≠1.4." B. The null hypothesis expressed in words is, "the mean length of a baseball team's games is at least 1.4 hours." The null hypothesis is expressed symbolically as, "H0: μ≥1.4." C. The null hypothesis expressed in words is, "the mean length of a baseball team's games is at most 1.4 hours." The null hypothesis is expressed symbolically as, "H0: μ≤1.4." D. The null hypothesis expressed in words is, "the mean length of a…

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