2.21 a. Concentrated between 38 and 46. b. Shape of distribution is slightly skewed left. Ratings have an upper limit but stretch out to the low side. c. Class 1 2 3 4 5 6 7 8 34 < x ≤ 36, 36 < x ≤ 38, 38 < x ≤ 40, 40 < x ≤ 42, 42 < x ≤ 44, 44 < x ≤ 46, 46 < x ≤ 48, more d. Class 1 2 3 4 5 6
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NORTHCENTRAL UNIVERSITY ASSIGNMENT COVER SHEET Learner: Patricia Lett THIS FORM MUST BE COMPLETELY FILLED IN Please Follow These Procedures: If requested by your mentor, use an assignment cover sheet as the first page of the word processor file. The assignment header should include the Learner’s last name, first initial, course code, dash, and assignment number (DoeJXXX0000-1) justified to the left and the page number justified to the right. Keep a Photocopy or Electronic Copy
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help build a database to better understand aspects of the ILC’s customers, such as the size or number of customers in given period of time, and certain patterns that emerge to help demonstrate a better understanding an example would be statistical distribution. With respect to the size of the population at I Love Coffee, it has an unlimited population. Patterns of customer arrivals at (ILC) show a rise in arrivals between 07:00AM – 11:00AM and 6:00PM – 12:00AM with intervals varying from 3:00 to 5:00
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T-2 • Tables Probability Table entry for z is the area under the standard normal curve to the left of z. z TABLE A Standard normal probabilities z −3.4 −3.3 −3.2 −3.1 −3.0 −2.9 −2.8 −2.7 −2.6 −2.5 −2.4 −2.3 −2.2 −2.1 −2.0 −1.9 −1.8 −1.7 −1.6 −1.5 −1.4 −1.3 −1.2 −1.1 −1.0 −0.9 −0.8 −0.7 −0.6 −0.5 −0.4 −0.3 −0.2 −0.1 0.0 .00 .0003 .0005 .0007 .0010 .0013 .0019 .0026 .0035 .0047 .0062 .0082 .0107 .0139 .0179 .0228 .0287 .0359 .0446 .0548 .0668 .0808 .0968 .1151 .1357 .1587 .1841
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Internet/ facebook and one person said radio, another one said by chance. Recommendation: Instead spending on radio, Crown should get more agents, as a lot of students hear about Crown by them. Q2. How many new friends have you made at Crown? The distribution is Bimodel, mode for female is 5, male is 10; Range of female is 19, male is 27. Recommedation: female should more active to make friends. Q3. What is the main reason you decided to study at Crown? The pie chart shows that 25% for uni, 27% fast
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TICKET PRICES UEFA League final tickets are the most prestige tickets in the world. After doing a sample of 240 punters who have premier seats for the UEFA League Final match, it was determine that many people are paying more than the face value of $1,100, but they are not paying more than $1,500. UEFA League officials sell out tickets each year for the UEFA League Final match within a month of releasing tickets. However, most tickets are resold to third and possibly fourth parties.
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Experimental Design and Analysis of Variance Review: chi square = we want to know whether a data set fits a certain distribution/independence model. We use the chi square distribution, then we check how far away the test statistic is from 0. As data set becomes farther away from what you expect to get, you get larger differences between expected model and actual model (you get a larger test statistic) Components of ANOVA: Factor – independent variable. We want this variable to be qualitative
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percent confidence interval for the true mean. Please show your formulas and all calculations. Must use the equation editor. Sample mean is: x=0+520+712+806+1072+0+536+738+856+1072+536+792+938+1072+324+676+806+1072+1072+26020=13,86020=693 Sample standard deviation is: xi | (xi-x)2 | 0 | 480,249 | 520 | 29,929 | 712 | 361 | 806 | 12,769 | 1072 | 143,641 | 0 | 480,249 | 536 | 24,649 | 738 | 2,025 | 856 | 26,569 | 1072 | 143,641 | 536 | 24,649 | 792 | 9,801 | 938 | 60,025
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Butler Products Case Study for DBA 8230 May 8, 2012 Background The Butler family of products produces a wide variety of items. One of the manufacturing companies makes products in three finishing departments (A, B, and C), which have identical assembly operations but package the products differently for different lines of business. Each finishing line packages units as either single or multiple units per package. For allocating overhead, volume is defined in terms machine hours. Each
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z* that corresponds to a 94% level of confidence. 4) _____ A) 1.96 B) 1.645 C) 2.33 D) 1.88 5) In a sample of 10 randomly selected employees, it was found that their mean height was 63.4 inches. From previous studies, it is assumed that the standard deviation, σ, is 2.4. Compute the 95% confidence interval for μ. 5) _____ A) (59.7, 66.5) B) (58.1, 67.3) C) (61.9, 64.9) D) (60.8, 65.4) 6) True or False: As the level of confidence increases the margin of error decreases. 6) _____ A) True
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