QUESTION 13Imagine we took a group of smokers, recorded how many cigarettes they smoked each day and then split themrandomly into one of two 6-week interventions; 'hypnosis' or 'nicotine patch'. After the 6 weeks, we again recordedhow many cigarettes they smoked each day and subtracted this number from the number of cigarettes they eachsmoked pre-intervention, to produce a intervention success score for each participant. Out of the following options,which would be the best method of displaying the results?Oa. A simple bar chart with the variable 'intervention method' on the y-axis and 'intervention success' on the x-axis.Ob. A simple boxplot with the variable 'intervention method' on the x-axis and 'intervention success' on the y-axis.Oc. A clustered boxplot with 'intervention success' on the y-axis and 'intervention method' on the x-axisOd. A simple boxplot with the variable 'intervention method' on the y-axis and 'intervention success' on the x-axis.Click Save and Submit to save and submit. Click Save All Answers to save all answers.O SearchLDOCipESave All Answers

The correct option is b. i.e., A simple boxplot with the variable 'intervention method' on the…

Answered: Imagine we took a group of smokers,…

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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You want to compare males and females in their use of coping strategies when engaged in conflict in relationships. You send surveys to couples obtained from marriage license application at the county clerk's office. You identify several distinct coping strategies on the survey and have the respondents rate their use of each strategy on a 7-point scale. You then compare scores that come from the two members of each relationship. If testing hypotheses about the effects of gender on use of coping strategies, it would be most appropriate to calculate a ... 1) independent-samples t 2) one sample t 3) paired samples t 4) z test
A substance abuse counselor wants to demonstrate the effect of situational stress on alcohol cravings. He recruits two groups of men who are similar in respect to history of alcohol use and demographic variables. He divides them in to two groups. In one group(n=11), the men are exposed to a stressful situation and then asked to complete a measure rating their alcohol cravings on a scale from 0-10, where 0 representsno cravings and 10 represents intense cravings. In the second group (n=10), the men are exposed to a neutral situation and asked to complete the same measure. What test and graph should I create to find out if a stressful situation result in more intense alcohol cravings than a non-stressful situation?
For each scenario listed on the left, determine whether the scenario represents an Indepenent Samples or Matched pairs situation by placing the appropriate letter in the box provided. -ab Comparing the number of speeding tickets received by men to the number received by women -ab Comparing pain levels before and after treatment with magnetic therapy -ab Comparing pre-test scores before training to post-test scores -ab Comparing pain levels of a group receiving a placebo to a group receiving a medicine Matched Pairs Independent Samples
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To test the effectiveness of protective packaging, a firm shipped out 121 orders in regular light packaging and 152 orders in heavy-duty packaging. Of the orders shipped in light packaging, 20 arrived in damaged condition, while of the orders shipped in heavy-duty packaging, 10 arrived in damaged condition. Can you conclude that heavy-duty packaging reduces the proportion of damaged shipments?
please explain!
Thirty students participated in a study designed to evaluate a new online homework system. None of the students had used an online homework system in the past. After using the system for a month, they were asked to rate their satisfaction with the system using a five-point scale.
just the last part thank you!
An aerosolized vaccine for measles was developed in Mexico and has been used on 44 million children since 1980. Aerosolized vaccines have the advantages of being able to be administered by people without clinical training and do not cause injection‐associated infections. The percentage of children developing an immune response to measles after receiving the subcutaneous injection of the vaccine is 95%,95%, and for those receiving the aerosolized vaccine, it is 85%85% . There are 2020 children to be vaccinated for measles using the aerosolized vaccine in a small rural village in India. We are going to count the number who developed an immune response to measles after the vaccination. (b) What is the probability that at least one child does not develop an immune response to measles after receiving the aerosolized vaccine? (Enter your answer as a proportion rounded to four decimal places.)
A doctor wanted to study the effect of four different treatments on mental health. A group of 100 adults experiencing depression volunteered for the study. The doctor randomly assigned one-fourth of them to each of four groups. Group 1 followed a specific exercise plan, group 2 followed a specific diet plan, group 3 followed an exercise and diet plan, and group 4 did not follow any plan. After 4 weeks, the doctor contacted each participant and asked them if they felt any better. The results are displayed in the table. The doctor would like to know if these data provide convincing evidence that the distribution of responses differs across the treatment groups in the population of all patients like these. The random condition is met. The 10% condition is not needed because random sampling did not take place. This table of expected counts shows that all expected counts are at least 5. What is the value of the chi-square test statistic? χ‑2 = 5.03 χ‑2 = 6.26 χ‑2 = 25.33 χ‑2 = 39.22

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