You are interested in investigating the efficacy of a new pain medication and design an experiment measuring pain levels before andafter the administration of a new medication. You recruit 9 people to participate in your study and bring the same 9 participants in fortwo separate sessions. Here is the raw data:Pair Number Placebo Pain Score Pain Medication Pain Score124567895710587868QUESTION 20558443532Use the t-test handout printout provided to calculate the t-statistic. What is the t-test statistic value? Round to the nearesttenth.What conclusion would you make on the above data, based on the t-value you calculated and the critical value of t?O You accept the null hypothesis because the t-value you calculated is inside the bounds of the critical t-valueO You reject the null hypothesis because the t-value you calculated is inside the bounds of the critical t-valueO You reject the null hypothesis because the t-value you calculated is outside the bounds of the critical t-valueO You accept the null hypothesis because the t-value you calculated is outside the bounds of the critical t-value

Given that: Pair Number Placebo Pain Score Pain Medication Pain Score 1 5 5 2 7 5 3 10 8…

Answered: You are interested in investigating the…

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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i need help with part G
The boxplot below shows salaries for Construction workers and Teachers. Construction Teacher 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 Salary (thousands of $) If a person is making the first quartile salary for a construction worker, they are making more than what percentage of Teachers? They are making more than % of Teachers.
Using the same anti-venom study, answer the following questions. A study was done on children (6 months to 18 years of age) who had (nonlethal) scorpion stings. Researchers wanted to know the effectiveness of a new anti-venonm. Each child was randomly assigned to receive a shot of the anti-venom or a placebo shot. Researchers recorded whether or not their condition improved over the next four hours. a. Identify the population for the study. b. Identify the sample for the study. (HINT: See #1) c. Was this an observational study or a controlled experiment? Explain how you know. d. Assuming the rest of the study was well-designed, use your answers to discuss whether it would be reasonable to conclude that the new anti-venom is effective at treating nonlethal scorpion stings in children. For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). TTTTParagraph Arial 3 (12pt) 三,三,T. 回i:公 E=E= = T T, U HTML CSS O Mashups
Researchers wondered whether the size of a person's brain was related to the individual's mental capacity. They selected a sample of 3 females and 3 males and measured their MRI counts and IQ scores. The data is reported on the right. Females Males MRI IQ MRI 10 866,664 132 965,355 132 790,620 135 1,001,121 141 856,473 141 1,079,550 135 O Treat the MRI count as the explanatory variable. Compute the linear correlation coefficient between MRI count and IQ for both the males and the females. Do you believe that MRI count and IQ are linearly related? The linear correlation coefficient for females is. The linear correlation coefficient for males is. (Round to three decimal places as needed.) Are MRI count and IQ linearly related? linear The linear correlation coefficient for females is close to ▼so relation exists between MRI count and IQ for females. The linear correlation coefficient for linear relation exists between MRI count and IQ males is close to for males. SO
The stated goal of a chain of service stores is to provide a lube and oil change for anyone's automobile in 15 minutes. The manager at one store thinks that there is a growing disparity among his workers in the time it takes to lube and change the oil of an automobile. To monitor this, the manager has selected a sample of 20 days and has recorded the time it took five randomly selected employees to service an automobile. The data are found below. Complete parts a through d Click the icon to view the data. a. The manager noticed that the longest time it took to service a car was 25.73 minutes. Suppose the distribution of fimes to service a car was normal, with a mean of 15. Without analyzing the sample data, use your knowledge of a normal distribution to give the manager an estimate for the population standard deviation for the time it takes to service a car. The standard deviation is minutes. (Round to two decimal places as needed.) b. Use the data to construct an x- and an R-chart.…
Empathy among police officers influences how they interact with citizens and the likelihood that they receive complaints. Gender differences in levels of empathy in the general population are not large but male and female officers have been shown to have different interaction styles with the public; this may be due to the different empathy levels. After sampling officers and measuring their levels of empathy you find the following data. Males Females n = 6 n = 9 M = 31 M = 45 SS = 490 SS = 680 If you were going to make gender comparisons like this, which option would be the correct choice? Write A or B in the box. [a] Option A. Independent-measures t-test Option B. Repeated-measures t-test
What is Jackson’s percentile?
South Dakota prices vary $350,000: $400,000:$400,000:$425,000:$429,000: $440,000: $560,000: $585,000,: $585,000: $785,000 : $1,300,000. We found the following Mean = 569000 SD = 272703.1353 T score = .7113 P Value = .4932 We failed to reject the hypothesis. What is a 95% confidence interval and how would you create one for the population average price? What would it look like. How does this related to Central limit therorem? If you had a margin of error of $13,000 how large of sample would you need with a 90% confidence interval using the given tscore.
4. Data were collected from a pretest and posttest of students taking a two-week course in substance abuse. Would you use a t-test (and if so, which one), or would you use ANOVA? Given the following data, complete the exercise to see if there is a significant difference between the two tests. Pretest Posttest 84 90 85 75 70 89 65 91 71 85 72 79 84 88 85 85 66 82 67 99
Dr. Ferreira's research examines how intimate couples view their relationship. Dr. Ferreira asked each member of the couple to rate their happiness with the relationship and these data are below. Dr. Ferreira wants to know whether men or women have a more positive view of their relationship. What can Dr. Ferreira conclude? Show your work (Hypotheses, Statistical Test, Decision, & Conclusion). Data: Couple ID 1 2 3 4 5 6 7 8 9. 10 Мean Standard Deviation Male 12 10 15 8 14 18 9 7 14 11.3 3.92 Female 8 7 6 11 11 | 15 4 7 6 | 3 7.8 3.61 Difference 4 3 9. -3 3 3 2 1 11 3.5 3.95 2.
To test whether actually taking Introductory Statistics decreases students’ anxieties about the field of Statistics, a Statistics instructor gave a test to rate student anxiety at the beginning and end of his course. Anxiety levels were measured on a scale of 0-10. Here are the data for 16 randomly chosen students from a class of 180 students: Pre-course Anxiety Level: 7 6 9 5 6 7 5 7 6 4 3 2 1 3 4 2 Post-course Anxiety Level 4 3 7 3 4 5 4 6 5 3 2 2 1 3 4 3 Do the data indicate that anxiety levels about the field of Statistics decreases after students take Introductory Statistics? Use a significance level of ? = 0.05. a) what is the test statistics and p-value? b) Find a 90% confidence interval for the difference in the anxiety levels about the field of Statistics
The boxplot below shows salaries for CPAS and Actuaries in a town. СРА Actuary 20 30 40 50 60 70 80 90 100 110 Salary (thousands of $) If a person is making the third quartile salary for a CPA, they are making less than % of Actuaries.

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