Problem 2.A 5-day traffic study measuring the traffic flow by a school collected the following data for daily vehicle countDaily average 7632 carsDaily standard deviation 1530 carsProblem 2a)If a 99% 1-sided upper confidence bound were to be written for the daily average, what t value would be used in the calculation?4.0320 4.6043.7473.3658 1 pointProblem 2b)Based on the data in the problem statement, we can definitively say that 7632 cars/day for traffic flow by the school.O TrueFalse1 pointProblem 2c)The claim is made that the average traffic flow past the school is greater than 10,000 cars/day. Which of the following are the correct null and alternative hypotheses for thisclaim?H:10000HA: >10000H: 10000HA: <10000He: 10000HA: <10000OHS10000HA: >10000

For a 99% confidence interval, the degrees of freedom (df) would be the number of observations minus…

Answered: Problem 2. A 5-day traffic study…

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

chapter 10 problem 16, I need help with the last part of this problem. thanks
2. Below are the results of a Chi-Square test using the variables "believing astrology is scientific" (the independent variable) and having "ever read a horoscope or persona astrology report" (the dependent variable). Answer the following questions based on the information in these results. Ever read a horoscope or Personal astrology report " Astrology is scientific Crosstabulation % within Astrology is scientific Astrology is scientifc Not at all scientific Sort of Very scientific scientific Total Ever read a horoscope or Yes Personal astrology report 63.6% 58.7% 33.4% 44.0% No 36.4% 41.3% 66.6% 56.0% Total 100.0% 100.0% 100.0% 100.0% Chi-Square Tests Asymptotic Significance (2-sided) Value df Pearson Chi-Square 76.636* 2 .000 Likelihood Ratio 77.050 .000 Linear-by-Linear Association 69.776 .000 N of Valid Cases 1139 A. What is the null hypothesis concerning these variables? B. Based on the p-value (significance) from these results, can you reject the null hypothesis? C. What do these…
15. Research results suggest that IQ scores for boys Plomin, 2006). A typical study looking at 10-year-old are more variable than IQ scores for girls (Arden & size would be reported in a journal article. children classifies participants by gender and by low. average, or high IQ. Following are representing the research results. Do the data indicate a significant difference between the frequency distri- butions for males and females? Test at the .05 level of significance and describe the difference. hypothetical data 1 IQ Low Average High Вoys 18 42 20 80 Girls 12 54 14 80 n = 160 Int Ava
Wk Qu. 13-11 A simulation returns... A simulation returns the following statistics: Mean 100 Standard Deviation: 5 Mode: 96 Minimum:75 Maximum: 135 Standard Error: 8. What is the most likely value? Most likely value A 68% confidence interval for the true mean would start at a value of 92 and end at a value of 108. A 68% confidence interval for the true mean would start at a value of and end at a value 108
Chapter 08, Section 8.3, Problem 044 The mean time taken to design a house plan by 38 architects was found to be 20 hours with a standard deviation of 3.70 hours. X Incorrect. a. Construct a 95% confidence interval for the population mean u. Round your answers to two decimal places. to hours
2) Researchers are interested in whether there is any relationship between a person's IQ (x- variable) and how long they live (y-variable). Answer the questions below by using the data provided. Show your work and use the back of the page if necessary. X Y 10 3 6. 6. 7 4 3 4 a) What type of statistical analysis would be most appropriate to use in this scenario? Please justify your answer. b) Please state the null and alternative hypotheses. c) Please report the results of your statistical analyses and make a decision about whether to reject or fail to reject the null hypothesis Use alpha = .05 (two-tailed). %3D
3. ACT scores are roughly Normal with mean 20.8 and standard deviation 4.8, and SAT scores are roughly Normal with mean 1026 and standard deviation 209. Some students take both. For those students, the correlation between the two scores is 0.72. a. What's the equation of the straight line that you'd use to predict ACT scores based on SAT scores? b. I got a 1300 on the SAT, and I'm planning to take the ACT. Predict what I might get, c. What's the equation of the straight line that you'd use to predict SAT scores based on ACT scores? d. My friend got a 27 on the ACT, and she's planning to take the SAT. Predict what she might get. e. How come you're predicting both that I'll do worse than her on the ACT and that she will do worse than me on the SAT? 4. Draw a simple random nlc of size 15 from the labels 40os01, 402.
39. The cumulative frequency table below shows the length of time that 30 students spent text messaging on a weekend. Minutes Used 31-40 31-50 31-60 31-70 31-80 1) 31-40 2) 41-50 3) 51-60 4) 61-70 Cumulative Frequency 2 5 10 19 30 Which 10-minute interval contains the first quartile? deled as a linear equation? esses by 10% 's s and 84) mumixem a esd) 3) Two lib liten pool eve The (E (A) day. OLSE dy desperat
Chapter 8. 5) A random sample of 43 Foreign Language movies made since 2000 had a mean length of 112.5 minutes, with a standard deviation of 12.6 minutes. (a) Construct a 95% confidence interval for the true mean length of all Foreign Language movies made since 2000 (b) As of November 2010, three Spider-Man movies have been released, and their mean length is 129 minutes. Someone claims that the mean length of Spider-Man movies is actually less than the mean length of all Foreign Language movies. Does the confidence interval contradict this claim? 6
2.1 The Australian Bureau of Statistics (ABS) has recently released a report on the relationship between international students’ ethnicity and enrolments in higher education. Identify the dependent variable(s) and the independent variable (s) in the above scenario.
4. Answer question 2
Suppose two samples of subjects yield the following results : Sample1 Age 28 Mean weight 66.2 kg Standard 5 kg deviation Sample 2 Age 13 Mean weight 37.2 kg Standard Deviation 5kg Which has a greater dispersion (variability) the weight of the 28 years old or the weight of 13 years old?

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