1. Wellstone Inc. produces and markets replacement covers for cell phones in avariety of colors. The company would like to allocate its production plans tofive different colors: bright white, metallic black, magnetic lime, tangerineorange, and fusion red. The company set up a kiosk in the Qwanlin Mall forseveral hours and asked randomly selected shoppers which color they preferredfor a cell phone cover. The results follow:Type of colorBright whiteMetallic blackMagnetic limeTangerine orangeFusion reda. What is this table called?b. Construct a bar chart for the table.c. Add relative frequencies to the table.d. Construct a pie chart for the data.Frequency130104325455286

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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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Maya has two ways to travel from her home in Norco to her office in Los Angeles. One is to go via the 10 Freeway, and the other is to go via 60 Freeway. In order to determine which way she should travel on a daily basis, Maya has recorded the travel times for samples of eleven trips via the 10 Freeway and eleven trips via the 60 Freeway. The following table gives the travel times (in minutes) for the twenty-two trips. Travel times in minutes 10 Freeway 74, 72, 75, 75, 74, 72, 67, 67, 75, 69, 71 60 Freeway 70, 80, 69, 71, 69, 77, 68, 79, 74, 79, 77 Send data to calculator Send data to Excel Assume that the two populations of travel times are normally distributed and that the population variances are equal. Can we conclude, at the 0.05 level of significance, that u,, the mean travel time via the 10 freeway, is different from µ,, the mean travel time via the 60 freeway? Perform a two-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal…
A world-famous prix fixe menu includes the following choices. Beverage (choose one): wine, soft drink, coffee, tea, milk, juice, or cappuccino First course (no choice): baguette, bruschetta, whole roasted garlic, and butter Second course (choose one): quesadilla, onion soup, salad, Caesar salad, lettuce wedge, spinach salad, or romaine salad Third course (choose one): rib eye steak, swordfish, rack of lamb, whitefish, grilled chicken, southern fried chicken, lobster, or vegetarian plate if you choose steak, then choose one of the following: fries, mashed potatoes, creamed corn, spinach, broccoll, or grilled onions Fourth course (choose one): chocolate cake, cinnamon tart, apple tart, pecan tart, creme brulee, mango sorbet, or chocolate tart How many different choices are possible? meals
USA Today posted this question on the electronic version of its newspaper: “Should guys pay for their first date?” Of the 1148 subjects who decided to respond, 85% of them said “yes.” (a) Determine whether the study is an experimental or an observational study.
People often match their behavior to their social environment. One study of this idea first established that the type of music most preferred by black college students is R&B and that white college students' most preferred music is rock. Will students hosting a small group of other students choose music that matches the makeup of the people attending? Assign 9090 black business students at random to three equal‑sized groups. Do the same for 9696 white students. Each student sees a picture of the people he or she will host. Group 1 sees six blacks, Group 2 sees three whites and three blacks, and Group 3 sees six whites. Ask how likely the host is to play the type of music preferred by the other race. Use ANOVA to compare the three groups to see whether the racial mix of the gathering affects the choice of music.
Amy has two ways to travel from her home in Norco to her office in Los Angeles. One is to go via the 10 Freeway, and the other is to go via 60 Freeway. In order to determine which way she should travel on a daily basis, Amy has recorded the travel times for samples of eight trips via the 10 Freeway and eight trips via the 60 Freeway. The following table gives the travel times (in minutes) for the sixteen trips: Travel times in minutes 10 Freeway 73, 69, 72, 71, 73, 73, 72, 73 60 Freeway 80, 75, 68, 72, 73, 81, 67, 75 Assume that the two populations of travel times are normally distributed and that the population variances are equal. Can we conclude, at the 0.1 level of significance, that the mean travel times of the two routes are different? Perform a two-tailed test. Then fill in the table below. Carry your intermediate computations to at least three decimal places and round your answers as specified in the table. (If necessary, consult a list…
is the testing of the questionnaire on a small sample of respondents to imprave the questionnaire by 2. identifying and eliminating potential problems. a Funneling b. Telescoping Post testing d. Pretesting C.
The University of Ballygobackwards has three colleges: the College of Science, which has 15 staff, 5 of whom are female; the College of Engineering, which has 8 staff, 4 of whom are female; and the College of Arts, which has 17 staff, 6 of whom are female. Each college has a Dean, who is chosen from the staff in that college. What is the total number of ways these three Deans can be chosen? Answer: How many ways can three Deans be chosen, so that at least one of them is female? Answer:
Here are some summary statistics for the numbers of hectares of olives and apples harvested per region, for area that planted those crops. In Region A, there were 36 hectares of olives harvested and 18 hectares of Apples harvested. Relative to its crop, which plant had a better harvest? A: They had equally good harvests relative to their crops. B: The Olives. C: It’s impossible to say without seeing all of the harvest amounts. D: The Apples.

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