In some literature, a coach company claims that the median journey time for its services between Bristoland Aberdeen is 13 hours.A couple of regular passengers are interested in whether or not this claim is correct. To test this theytimed how long the journey took on some of the occasions they made the trip. For a total of 24 tripsbetween Bristol and Aberdeen, they found that 15 of the trips were shorter than 13 hours, 7 of the tripstook longer than 13 hours and 2 of the trips took exactly 13 hours.Suppose a sign test is carried out to test the hypothesis that the median journey time is 13 hours. Selectthe TWO statements which are TRUE.Select one or more:The test statistic is 24.The test statistic is 15.The sample size that should be used in the test is 22.The test statistic is 22.The sample size that should be used in the test is 24.The test statistic is 6.The test statistic is 5.The sample size that should be used in the test is 2.The test statistic is 7.U

The question is about sign test Given : No. of trips shorter than 13 hours = No. of negatives = 15…

Answered: and Aberdeen is 13 hours. A couple of…

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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please, solve this question using easy wording.. so that its easy to understand..
Stephens, Atkins, and Kingston (2009) conducteda research study demonstrating that swearing can help reduce pain. In the study, each participant was asked to plunge a hand into icy water and keep it there as long as the pain would allow. In one condi- tion, the participants repeatedly yelled their favorite curse words while their hands were in the water. In the other condition the participants repeated a neu- tral word. Data similar to the results obtained in the study are shown in the following table. Calculate the mean number of seconds that the participants could tolerate the pain for each of the two treatment condi- tions. Does it appear that swearing helped with pain tolerance?
Please help with questions 18 & 19.
NT 16. It appears that there is some truth to the old adage "That which doesn't kill us makes us stronger." Seery, Holman, and Silver (2010) found that individuals with some history of adversity report better mental health and higher well-being compared to people with little or no history of adversity. In an attempt to examine this phenomenon, a researcher surveys a group of col- lege students to determine the negative life events that they experienced in the past 5 years and their current feeling of well-being. For n = 18 participants with 2 or fewer negative experiences, the average well-being score is M = 42 with SS = 398, and for n = ticipants with 5 to 10 negative experiences the average score is M = 48.6 with SS = 370. a. Is there a significant difference between the two populations represented by these two samples? Use a two-tailed test with a = .01. 16 par- %3D %3D %3D %3D b. Compute Cohen's d to measure the size of the effect. c. Write a sentence demonstrating how the outcome…
please answer the following question thank you
Commuting A man who moves to a new city sees thatthere are two routes he could take to work. A neighborwho has lived there a long time tells him Route A willaverage 5 minutes faster than Route B. The man decidesto experiment. Each day he flips a coin to determinewhich way to go, driving each route 20 days. He finds that Route A takes an average of 40 minutes, with stan-dard deviation 3 minutes, and Route B takes an aver-age of 43 minutes, with standard deviation 2 minutes. Histograms of travel times for the routes are roughlysymmetric and show no outliers.a) Find a 95% confidence interval for the difference inaverage commuting time for the two routes.b) Should the man believe the old-timer’s claim that he can save an average of 5 minutes a day by always driv-ing Route A? Explain.
To earn full credit for this question, use your own sheet of paper to solve the problem, showing all steps of your work. A ping pong ball is drawn at random from an urn consisting of balls numbered 4 through 9. A player wins $1 if the number on the ball is odd and loses $0.5 if the number is even.Let x be the amount of money a player will win/lose when playing this game, where x is negative when the player loses money.(a) Construct the probability distribution table for this game. Round your answers to two decimal places. Outcome x Probability P(x) (b) What is the expected value of player's winnings? Round to the nearest hundreth.(c) Interpret the meaning of the expected value in the context of this problem.
please answer for the 2nd, 4th, 8th and 16th days Need only a handwritten solution only (not a typed one).
Suppose you have traveled back in time to March 2020 and we are interested in finding out how many people currently have COVID-19. Use your understanding of the statistics to explain what we would need to do to find out how many people in America currently have Covid-19 (i.e. explain how statistical concepts would be able to help with this task.)
Suppose a researcher is surveying four subjects: subject A, subject B, subject C, and subject D. Subject A wants to impress the researcher above all else, while the other subjects do not care if they impress the researcher. Which subject is least likely to answer all the questions honestly? OA. Subject C O B. Subject D C. Subject A D. Subject B
The college newspaper of a large Midwestern university periodically conducts a survey of students on campus to determine the attitude on campus concerning issues of interest. Pictures of the students interviewed along with quotes of their responses are printed in the paper. Students are interviewed by a reporter "roaming" the campus selecting students to interview "haphazardly." On a particular day, the reporter interviews five students and asks them if they feel there is adequate student parking on campus. Four of the students say, "no." Which of the following conditions for inference about a proportion using a confidence interval are violated in this example? 1. The data are an SRS from the population of interest. II. The population is at least ten times as large aş the sample. III. np > 10 and n(1 – p) > 10 O All three conditions are violated O Il only O l and III O Il only O I only
15P

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