1. Do social robots walk or roll? Refer to the InternationalConference on Social Robotics (Vol. 6414, 2010) study ofthe trend in the design of social robots, Exercise 2.1(p. 26). Recall that in a random sample of 106 social (orservice) robots designed to entertain, educate, and care forhuman users, 63 were built with legs only, 20 with wheelsonly, 8 with both legs and wheels, and 15 with neither legsnor wheels. One of the 106 social robots is randomly se-lected and the design (e.g., wheels only) is noted.a. List the simple events for this study.b. Assign reasonable probabilities to the simple events.c. What is the probability that the selected robot isdesigned with wheels?d. What is the probability that the selected robot isdesigned with legs?Toxic chemical incidents. Process Safety Progress (Sept.2004) reported on an emergency response system for inci-dents involving toxic chemicals in Taiwan. The system haslogged over 250 incidents since being implemented in2000. The accompanying table gives a breakdown of thelocations where these toxic chemical incidents occurred.Consider the location of a toxic chemical incident inTaiwan.a. List the simple events for this experiment.b. Assign reasonable probabilities to the simple events.c. What is the probability that the incident occurs in aschool laboratory?2.

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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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3.24: The data in the accompanying table are from the Organization for Economic Co-operation and Development (data.oecd.org/eduatt/population-with-tertiary-education.htm, retrieved February 18, 2018). Entries in the table are the percentage of 25- to 34-year-old people who have completed a 4-year college degree for 27 countries in 2016. Country Percentage of people age 25 to 34 with 4-year degree Country Percentage of people age 25 to 34 with 4-year degree Australia 49.3 Italy 25.6 Austria 39.7 Japan 60.1 Canada 60.6 Mexico 21.8 Colombia 28.1 New Zealand 43.4 Costa Rica 28.9 Norway 48.6 Czech Republic 32.6 Poland 43.5 Denmark 45.9 Portugal 35.0 Finland 41.1 Spain 41.0 France 44.0 Sweden 47,.2 Germany 30.5 Switzerland 48.8 Greece 41.0 Turkey 30.5 Hungary 30.4 United Kingdom 52.0 Iceland 43.3 United States 47.5 Israel 47.4…
A paper describes a study of the use of MRI (Magnetic Resonance Imaging) exams in the diagnosis of breast cancer. The purpose of the study was to determine if MRI exams do a better job than mammograms of determining if women who have recently been diagnosed with cancer in one breast have cancer in the other breast. The study participants were 950 women who had been diagnosed with cancer in one breast and for whom a mammogram did not detect cancer in the other breast. These women had an MRI exam of the other breast, and 101 of those exams indicated possible cancer. After undergoing biopsies, it was determined that 30 of the 101 did in fact have cancer in the other breast, whereas 71 did not. The women were all followed for one year, and four of the women for whom the MRI exam did not indicate cancer in the other breast were subsequently diagnosed with cancer that the MRI did not detect. The accompanying table summarizes this information. Cancer Cancer Not Present Present Total MRI…
A study was conducted to determine whether big-city and small-town dwellers differed in their helpfulness to strangers. In this study, the investigators rang the doorbells of strangers living in a large City or small towns in the vicinity. They explained they had misplaced the address of a friend living in the neighbourhood and asked to use the phone. The following data show the number of individuals who admitted or did not admit the strangers (the investigators) into their homes: Helpfulness to strangers Admitted strangers into their home Didnot admit strangers into their home Big city dwellers 60 90 Small town dwellers 70 30 State the dependent and independent variable Is this a directional or non directional
Researchers at the University of Virginia randomly assigned 60 four-year-olds to one of three tasks: watch a fast-paced television cartoon, watch a slower-paced educational cartoon, or participate in a drawing activity for a nine-minute period. At the end of the period, the researchers tested the children's "executive function," using various tests intended to measure characteristics such as self-regulation and working memory. These researchers found that those children who watched the fast-paced cartoon scored lower on the different measures of executive function than those children who either watched the educational cartoon or did the drawing activity. [Source: Lillard, A. S. & Peterson, J. (2011). The immediate impact of different types of television on young children's executive function. Pediatrics, 128(4), 644-649.] Suppose you are a cognitive psychologist and want to see whether you would find similar results using a repeated-measures design and focusing on a measure of…
In an article in the Journal of Marketing, Bayus studied the differences between "early replacement buyers" and "late replacement buyers" in making consumer durable good replacement purchases. Early replacement buyers are consumers who replace a product during the early part of its lifetime, while late replacement buyers make replacement purchases late in the product's lifetime. In particular, Bayus studied automobile replacement purchases. Consumers who traded in cars with ages of zero to three years and mileages of no more than 35,000 miles were classified as early replacement buyers. Consumers who traded in cars with ages of seven or more years and mileages of more than 73,000 miles were classified as late replacement buyers. Bayus compared the two groups of buyers with respect to demographic variables such as income, education, age, and so forth. He also compared the two groups with respect to the amount of search activity in the replacement purchase process. Variables compared…
A regional Internet service provider (ISP) is interested in whether a 15% discount on its price for its highest-speed service will notably impact customer retention. To answer this question, the ISP randomly chooses 75 of the 150 markets it serves to receive the 15% discount and keeps prices the same in the remaining 75 markets. After six months, the ISP observes the following: • For the markets receiving the discount, the average retention rate was 0.93 (i.e., 93%), with a standard deviation of 0.255. • For the markets not receiving the discount, the average retention rate was 0.88, with a standard deviation of 0.325. Using a 95% confidence interval, determine whether you can state with 95% confidence that the discount improved the six-month retention rate.
Determine the following: Fa Fb Faxb FA0.05 FB0.05 FAXB0.05 CONCLUSION: THANK YOU
To determine a target audience for a new email package, a computer company surveyed a sample of potential customers, asking each whether he/she uses email on a regular basis. considered "a regular basis" to be at least three times a week.) The data, as summarized table below, were classified according to two variables: the age of the respondent ("under 54", "55+") and regularity of email use ("on a regular basis" or "not on a regular basis"). Each cell of the table contains three numbers: the first number is the observed cell freque second number is the expected cell frequency (fF) under the assumption that there is no between age and regularity of email use and the third number is the following value. fo-fE) (Observed cell frequency - Expected cell frequency ) fE Expected cell frequency The numbers labeled "Total" are totals for observed frequency. Part 1
A CBS News poll conducted June 10 and 11, 2006, among a nationwide random sample of 651 adults, asked those adults about their party affiliation (Democrat, Republican or none) and their opinion of how the US economy was changing ("getting better," "getting worse" or "about the same"). The results are shown in the table below. bettersameworseRepublican3810444Democrat1287137none2190118 Express your answers as a decimal and round to four decimal places.If we randomly select one of the adults who participated in this study, compute: a. P(Democrat) = b. P(worse) = c. P(worse|Democrat) = d. P(Democrat|worse) = 3. P(Democrat and worse) =
Xu and Garcia (2008)conducted a research study demonstrating that 8-month-old infants appear to recognize which samples are likely to be obtained from a population and which are not. In the study, the infants watched as a sample of n = 5 ping-pong balls was selected from a large box. In one condition, the sample consisted of 1 red ball and 4 white balls. After the sample was selected, the front panel of the box was removed to reveal the contents. In the expected condition, the box contained primarily white balls like the sample, and the infants looked at it for an average of M = 7.5 seconds. In the unexpected condition, the box had primarily red balls, unlike the sample, and the infants looked at it for M = 9.9. The researchers interpreted the results as demonstrating that the infants found the unexpected result surprising and, therefore, more interesting than the expected result. Assuming that the standard error for both means is σM = 1 second, draw a bar graph showing the two sample…

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