The following is a graph of the daily readings. Each night the CPAP machine records the number of "stopbreathing" episodes for a person with severe sleep apnea. Day 1 is when they received the machine. At day 40,the person with severe sleep apnea receives a new face mask that not only covers his nose, but his mouth too.What type of variation do we see between day 40 and day 79, Special or Common?Should Day 80 reading be investigated as a Special cause?What type of variation do we see between day 1 and day 40, Special or Common?True or False, Since the variation seen from day 1 to day 40 was common cause variation, the only way toimprove (lower) the number of episodes per day is to change the system completely which they did when theygot a new type of mask.Number of "Stop Breathing" EpisodesOver a Périod of 80 Days40302010-10102030405060708090DayQuestion Help: G Written ExampleSubmit QuestionNumber of "Stop Breathing" Episodes

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Answered: The following is a graph of the daily…

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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As a student, you probably have noticed a curious phenomenon. In every class, there are some students who zip through exams and turn in their papers while everyone else is still on page 1. Other students cling to their exams and continue working until the very last minute. Have you ever wondered what grades these students get? Are the students who finish first the best in the class or are they simply conceding failure? To answer this question, we carefully observed a recent exam and recorded the amount of time each student spent working and the grade each student received. Is there a relationship between the two?a. Create a scatter plot of the datab.…
Part A. Depression affects many people. 25 out of 100 people with untreated depression will lose at least one friendship while not receiving treatment. On the other hand, when people with depression are treated with medication and counseling, only 2 out of 100 will lose at least one friendship during treatment. The absolute risk of losing at least one friendship while being treated with medication and counseling is Answer: Blank/Blank blank = Blank = blank %
Question 2 The idea of insurance is that we all face risks that are unlikely but carry high cost. Think of a fire destroying your home. Insurance spreads the risk; we all pay a small amount, and the insurance policy pays a large amount to those few of us whose homes burn down. An insurance company looks at the records for millions of homeowners and sees that the mean loss from fire in a year is p = $250 per person. (Most of us have no loss, but a few lose their homes. The $250 is the average loss.) The company plans to sell fire insurance for $250 plus enough to cover its costs and profit. Why would it be unwise to sell only 12 policies? L Because if we have to pay for total loss for one or more of these 12 policies, it would be financially disastrous. L Because the probability that we would have to pay for total loss for one or more of these policies is very high. The statement is wrong. It is wiser to sell as few policies as possible. Because the income on 12 policies is very low.…
The following data was collected from a clinical trial testing a new drug aimed to lower blood pressure for individuals older than age 45. Half of the 20 participants received the new drug (Treatment = Yes) and the other half of the participants received a placebo pill (Treatment = No). Their age and gender was also recorded. Please use this data for Questions 17-19 and 20-24 and note, not all the information in the table will be used for either problem, you must decide what is relevant based on what the problem is asking. Subject ID Treatment Age Gender BP_Before BP_After D1 Yes 65 F 103.3 80.5 D2 Yes 59 F 93.6 85.9 D3 Yes 60 M 92 85.2 D4 Yes 54 F 93 87.8 D5 Yes 65 F 95.4 85.3 D6 Yes 57 M 109.6 94.2 D7 Yes 69 M 97.9 83.9 D8 Yes 62 M 96 85 D9 Yes 49 F 98.4 86.3 D10 Yes 45 M 98.4 90 C1 No 63 F 97.4 93.1 C2 No 56…
OSE 2 Researchers conducted a study to estimate the relationship between a subject's brain activity while watching a television commercial and subject's subsequent ability to recall the contents of commercials. People think that long commercial recall is remembered by the people compared with the short one. In order to understand the difference researcher made 10 long commercial and a short one for each products and commercials are watched by the same person. Then subjects are asked what they remembered from the commercial and giving the correct answers are codded by the following table. 1 2345678910 Long Commercial Recall 108668 9786 Short Commercial Recall 4 23444462 2 Ce Test the claim that long commercials recall is more than short one (The duration of the commercial make a difference to recall). Calculate the test statistics. Maksimum 3900 karakter yazabilirsiniz.
QUESTION 13 Eighty hamsters were trained to run a maze. The frequency distribution below presents the number of trials it took each hamster to successfully complete the maze. # of Trials 1 2 3 5 6 7 10 Frequency 5 5 11 13 12 19 Make a histogram for this frequency distribution by hand and attach your file as a pdf, jpg, or png.
Which of the following is an example of causation? Birthdays cause people to age. Aerobic exercise causes increased heart rate April 15 causes people to pay taxes. Sunshine causes people to spend the day outdoors
Please complete the following summary table for the following scenario. Please be sure to round your answers correctly to two decimal places (else it is marked wrong). An educational psychologist is interested in the effect of reading on reasoning abilities. Ten students from grades six through eight are enrolled in a reading club that requires daily reading of books for thirty days. Student reasoning ability is tested using a logic quiz with twenty question. The number of correct answers was recorded for each student. The researcher administered a logic quiz before, during, and after the thirty day reading assignment. Means are included below. Did the reading regularly affect reasoning? Before; 10.70 During: 11.50 After: 14.00 Source Time Error Sum of Squares 59.00 18.00 df 2 27 Mean Squares 29.5 0.67 F 44.03
Please help with this problem. Can you please explain using a calculator. Thank you.
Please answer the photo attached
Question D. Give a 95% interval estimate of the number of fatal accidents per 1000 licenses in a city where 15% of the licensed drivers are under 21. Same data set as above.
Use the information below to answer questions 27 and 28. Consider again the NCHS-reported mean total cholesterol level in 2002 for all adults is 2003. Suppose a new drug is proposed to lower total cholesterol. A study is designed to evaluate the ecacy of the drug in lowering cholesterol. Fifteen patients are enrolled in the study and asked to take the new drug for 6 weeks. At the end of 6 weeks, each patient’s total cholesterol level is measured and the sample statistics are as follows:n = 15, x̄ = 195.9, and s = 28.7. Is there statistical evidence of a reduction in mean total cholesterol in patients after using the new drug for 6 weeks? 27. The test statistic to be used is ........................................... and the hypotheses to test are?(i). ........................................................................... (ii)................................................................................. 28. Given that the table or the critical value is -2.145, do we accept…

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