7:08 PM Sun Nov 768%AAwww-awu.aleks.comB My Question...Bb5 - Statistic...Session Clos...Bb Collection -...M Login PageClos...AO DESCRIPTIVE STATISTICSОpeyemiInterpreting relative frequency histogramsEspañolAnagram puzzles involve sets of scrambled letters that must be rearranged to form words. A standardintelligence test employs these puzzles as an aid in assessing verbal ability. Several years ago, anundergraduate noticed that some versions of the intelligence test employed anagram puzzles with lower-caseletters, and some versions employed anagram puzzles with upper-case letters. She performed experiments,with college students as participants, to examine times for completion for the two versions. The histogrambelow summarizes information about the times for completion for the 25 students she tested on the lower-case version.Frequency876.Aa2-500700900110013001500Time for completion (in seconds)Based on the histogram, find the proportion of times for completion in the sample that are greater than orequal to 1300 seconds. Write your answer as a decimal, and do not round your answer.ExplanationCheckO 2021 McGraw Hill LLC. All Rights Reserved. Terms of UsePrivacy Center | Accessibility

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Answered: Es Anagram puzzles involve sets 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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A research group conducted an extensive survey of 2940 wage and salaried workers on issues ranging from relationships with their bosses to household chores. The data were gathered through hour-long telephone interviews with a nationally representative sample. In response to the question, "What does success mean to you?" 1470 responded, "Personal satisfaction from doing a good job." Let p be the population proportion of all wage and salaried workers who would respond the same way to the stated question. How large a sample is needed if we wish to be 95% confident that the sample percentage of those equating success with personal satisfaction is within 1.6% of the population percentage? (Hint: Use p ≈ 0.50 as a preliminary estimate. Round your answer up to the nearest whole number.) workers
would this be a one tail or two tail test?
Job Satisfaction. A study reported in the Journal of Small Business Management concluded that selfemployed individuals do not experience higher job satisfaction than individuals who are not selfemployed. In this study, job satisfaction is measured using 18 items, each of which is rated using a Likerttype scale with 1–5 response options ranging from strong agreement to strong disagreement. A higher score on this scale indicates a higher degree of job satisfaction. The sum of the ratings for the 18 items, ranging from 18 to 90, is used as the measure of job satisfaction. Suppose that this approach was used to measure the job satisfaction for lawyers, physical therapists, cabinetmakers, and systems analysts. The results obtained for a sample of 10 individuals from each profession follow. SatisJob Lawyer Physical Therapist Cabinetmaker Systems Analyst 44 55 54 44 42…
You may need to use the appropriate appendix table or technology to answer this question. In a recent poll six hundred adults were asked a series of questions about the state of the economy and their children's future. One question was, "do you expect your children to have a better life than you have had, a worse life, or a life about the same as yours?" Suppose the responses showed 251 better, 303 worse, and 46 about the same. Use the sign test and a = 0.05 to determine whether there is a difference between the number of adults who feel their children will have a better life compared to a worse life. State the null and alternative hypotheses. (Let p = the proportion of adults who feel their children will have a better life.) OH: P≥ 0.50 H₂: P 0.50 O H₂: P = 0.50 H₂: P = 0.50 O Ho: P < 0.50 H₂: P = 0.50 Find the value of the test statistic. (Round your answer to two decimal places.) z = -2.21 x Find the p-value. (Round your answer to four decimal places.) p-value = 0.0192 X What is…
Recent research suggests that the amount of time that parents spend talking about numbers can have a big impact on the mathematical development of their children (Levine, Suriyakham, Rowe, Huttenlocher, and Gunderson, 2010). In the study, the researchers visited the children's homes between the ages of 14 and 30 months and recorded the amount of "number talk" they heard from the children's parents. The researchers then tested the children's knowledge of the meaning of numbers at 46 months. The following data are similar to the results obtained in the study. X 5 Complete the following distribution table. 4 3 Children's Knowledge-of-Numbers Scores for Two Groups of Parents Low Number-Talk Parents High Number-Talk Parents 3, 4, 5, 4, 5 4, 2, 3, 5, 4 5, 3, 4, 5, 4 2 1 2, 1, 2, 3, 4 3, 3, 2, 2, 1 5, 3, 4, 1, 2 flow fhigh Using the following graphing tool, sketch a polygon showing the frequency distributions for children with low number-talk parents and children with high number-talk…
A high school track coach wanted to test whether giving the students an energy drink could affect performance during the 100 meter race. The coach split the 26 boys into two equal sized groups, where Group 1 was given the energy drink and Group 2 was not. The 100 meter race times were recorded during practice and shown in the table below. What inference can be made about the results? Group 1 Group 2 12.2 13 12.5 12.3 13.3 12.8 12.9 13 13 13.8 12.1 13 13 13 13 13 12.1 13 13 13 12.1 13 12.8 13 13 12.6 Mean: 12.7 Mean: 13 Since the simulation shows ( many cases or free cases )? where a mean difference of ( solve for this answer ) or less occurred when the groups were re-randomized, it can be inferred that the mean difference observed in the study was ( very possibly or very unlikely ) ?due to the random assignment of participants into groups, so the results of the study are (…
Mr Alsup asked the studentS in his third-and sixth-period English classes whether they had chosen a topic for thier writing assignment. he recorded the data in a two-way table, as shown below English class Yes No Total Third period 24 6 30 Sixth period 22 3 25 Total 46 9 55 if jannette in in mr alsup sixth-period english class what is the probablity that she has not chosen a topic for her writing assignment? a- 3% b- 5% c- 12% d-14%
Maddie conducts a study to see if listening to music helps students learn math. She surveys a random sample of 250 college sophomores who completed a math class within the past six months. She asks them to indicate how frequently they listened to music while studying math. The students also report their final grade in the math class at the end of the semester. Select the statement below that is false. There is no placebo in this study. Maddie conducted an observational study. A confounding variable could be how often the participants studied math. The population Maddie studied was 250 college sophomores.
question(13): The researcher decided to conduct the study again and recruited an additional 10 children from the full time kindergarden and an additional from the part time kindergarden, This time they matched the children in full time kindergarden and partime kindergarden on SES, gender, age, and vocabulary score .They based their hypotheses on the finding from a previous study and wanted to see if full time kinder garden would have better short term memory recall compared to children who attended partime kindergarden. Researchers read a list of 20 words ,then waited 2 minrderdenutes while the kids were having a snack, then they were asked to tell them how many words they remember. .Those who remember a word got a score of 1. A summary of the results is given below fulltime kindergarden: 15 9 10 8 11 7 14 12 11 13 partime kindergarden : 10 7 9 8 12 6 8 10 7 9 test the hypotheses…

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