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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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…
Rewrite the following sentence to remove its primary problem "We hypothesize that grade level has an effect on academic success."
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.
Craik & Tulving ran an experiment to determine how depth of processing during study affects memory. In the study phase, 12 participants made judgments about words. In one block of trials (the visual condition) they indicated whether the words were written in upper case or lower case; in another block of trials (the auditory condition) they indicated whether the words contained an "ee" sound; in another block of trials (the meaning condition) they indicated whether the meaning of the words was pleasant or unpleasant. There were 12 words in each block. After completing the study phase, participants were asked to write down all the words they could remember. Here are the data: Mean Visual 3.5 Auditory 4.5 Meaning 6.0 Standard Deviation 1.5 1.6 1.9 Compared to the within-subjects design, the between-subjects design (select all that apply) Oa. Would have less statistical power O b. Would be less prone to experimenter bias O c. Would be less prone to order effects Od. Would have better…
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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