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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.42 A skiing event has 13 participants for the slalom. The 5 participants with the fastest speeds will be listed, in the order of their speed, on the leader board. How many different ways are there for the names to be listed? There are ways for the names to be listed. Enter your answer in the answer box and then click Check Answer. All parts showing
Solve the following using Polya's four step method. • Understand the problem • Devise a plan • Carry out the plan • Look back If the mean of five observations, x, x+ 4, x + 6, x+ 8 and x + 12 is 16 Find the value of x.
OSM HTAM MATH 1420 11. A roulette wheel has 38 slots around the rim. The first 36 slots are numbered from 1 to 36. Half of these 36 slots are red, and the other half are black. The remaining 2 slots are numbered 0 and 00 and are green. As the roulette wheel is spun in one direction, a small ivory ball is rolled along the rim in the opposite direction. The ball has an equally likely chance of falling into any one of the 38 slots. Find each of the following: a. The probability that the ball lands in a black slot. b. The probability that the ball lands on 0 or 00. C. The probability that the ball does not land on a number from 1 through 12 d. The probability that the ball lands on an odd number or on a green slot
3. A poll done for Newsweek found that 10% of Americans have seen or sensed the presence of an angel. A contingent doubt that the percent is really that high. It conducts its own survey. Out of 85 Americans surveyed, only 5 had seen or sensed the presence of an angel. As a result of the contingent's survey, would you agree with the Newsweek poll? In complete sentences, also give three reasons why the two polls might give different results.
Another measure of central tendency that is rarely used but is easy to calculate is the midrange. It can be found using the formula below. A consumer testing service obtained the mileages (in miles per gallon) shown in the table to the right in five test runs performed with three types of compact cars. Each car manufacturer wants to advertize that its car performed the best in this test. Which of the car manufacturers of cars A, B, and C would prefer to use the midrange statistic in their ads? Explain your reasoning. Midrange= (Maximum data entry) + (Minimum data entry) 2 A 28 33 The manufacturer of (Type an integer or a decimal.) 28 29 35 Car MPG B 32 30 32 25 32 ... C 30 33 24 33 31 would prefer to use the midrange, since their car's midrange of mpg is the of the three models.
A researcher designs an intervention to combat anti-Arab oppression. She also designs a questionnaire to measure anti-Arab oppression so she can test the participants' level of anti-Arab oppression before and after the intervention. She tests one version of her questionnaire with 45 statements and a shorter version with 12 statements. In both questionnaires, the participants respond to each statement with a rating on a 5-point Likert scale with 0 equaling "strongly disagree" and 4 equaling "strongly agree." The overall score for each participant is the mean of his or her ratings for the different statements on the questionnaire. Look at the following graphs. Graph I graphs the results from the long version, and Graph II graphs the results from the short version. Graph I Graph II PARTICIPANTS PARTICIPANTS 8 8 7 7 6 6 4 4 3 3 2 1 1 1 2 3 4 2 4 LONG QUESTIONNAIRE SCORE SHORT QUESTIONNAIRE SCORE Complete the following sentences by trusting your eyes to see meaningful differences in the two…
Suppose Aaron recently purchased an electric car. The person who sold him his new car told him that he could consistently travel 200 mi before having to recharge the car's battery. Aaron began to believe that the car traveled even farther than the company claimed, and he decided to test this hypothesis formally. Aaron drove his car only to work and he recorded the number of miles that his new car traveled before he had to recharge its battery a total of 17 separate times. The table shows the summary of his results. Assume his investigation satisfies all conditions for a one-sample t-test. Mean miles traveled Sample size t-statistic P-value P 207 17 1.48 0.079 The results statistically significant at a = 0.01 because P 0.01. are are not V
Only do question 52 for Statistics and probability I
Questions 18-20. The psychology club is having a self-proclaimed psychic come to their campus fund-raising event to demonstrate his abilities. He charges $200 for these events, and the club is charging $1.50 for tickets with a chance to have the psychic read the ticket holder's mind. c. How many tickets are needed to break even? Hint: breaking even means making $0. (round to the next ticket)
in this question tell them to use X=2 and XX=82
A media personality argues that global temperatures are not rising, because every year an increase is reported, such as 0.09 degrees C. The difference from the previous year is less than the margin of error of about 0.13 degrees C, so that difference should be ignored. What is a strong counter argument? The difference is only 0.4 but that is still a significant change. The change of 0.9 is not a lot and thus should be ignored. The margin of error is larger than the increase so we should consider it an issue just extra information and thus can be ignored. The margin of error is quite small compared to the change year over year, so it is a significant issue.
I Need help with answering question 2 and 3. To conclude from the table given, there is a big difference in the hotels in the UK. The reason is that the P-Value is 0.5> so, therefore, we accept the value, therefore it's true that there is a big difference in the hotels in the UK. My question is, is my statement correct or am I wrong? This the information that given to me How likely is it that you would recommend <name hotel> to a friend or colleague on a scale from 0 (not likely) to 10 (most likely) What are the differences between hotels in UK: London, Birmingham, Leeds Thank you!

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