Is HDTV ownership related to quantity of purchases of other electronics? A Best Buy retail outlet collected the following data for arandom sample of its recent customers. At a = 0.10, is the frequency of in-store purchases independent of the number of large-screenHDTVS owned (defined as 50 inches or more)?In-Store Purchases Last MonthMore ThanHDTVS OwnedNoneOneOneRow TotalNone13121540One18323383Two or More174663126Column Total4890111249(a) The hypothesis for the given issue is Hg: HDTVS Owned and In Store Purchases are independent.O YesO No(b) Calculate the chi-square test statistic, degrees of freedom, and the p-value. (Round your test statistic value to 2 decimal placesand the p-value to 4 decimal places.)Test statisticDegrees of freedomp-value(c) Find the critical value for chi-Square. Refer to the chi-square Appendix E table. (Round your answer to 3 decimal places.)Critical value

The Chi square test is used to check the independence between two categorical variables. The…

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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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The following table shows the percentage of U.S. college freshmen in the given year who believed abortion should be legal. 1996 2000 2004 2008 2012 56.7 53.4 53.4 58.9 61.2 Using extrapolation, the estimated percentage of college freshmen who believed abortion should be legal in 2015 =
1.Check the skewness using Pearson's Index. 2. Based on your computation, is the distribution approximately normal?
given data: 2.1, 2.8, 3.7, 4.1, 4.6, 5.8, 6.3, 7.4, 8.2, 8.5, 9.6, 10.1, 10.3, 10.9, 11.0, 11.8, 12.4, 13.6, 13.9, 14.3, 14.6, 15.5, 15.9, 16.7, 16.9 Can someone help me with this series of questions please... 5a) Calculate the percentile of the data value 7.4. b) What value represents the 65th percentile? c) What does it mean for a data value to be in the 65th percentile?
Consider the following data representing the price of plasma televisions (in dollars). 1251,1315,1049,1147,1046,1112,1335,1354,1273,1206,1329,1347,1094,1351,1076,1287,1308,1062,1339,1332,12791251,1315,1049,1147,1046,1112,1335,1354,1273,1206,1329,1347,1094,1351,1076,1287,1308,1062,1339,1332,1279 Copy Data Price of Plasma Televisions (in Dollars) Class Frequency Class Boundaries Midpoint Relative Frequency Cumulative Frequency 1035–10941035–1094 1095–11541095–1154 1155–12141155–1214 1215–12741215–1274 1275–13341275–1334 1335–13941335–1394 Step 5 of 7 : Identify the midpoint of the fifth class.
A national survey of graduate students is conducted to assess their consumption of coffee. The following table summarizes the data. What proportion of coffee drinkers (caffeinated and decaffeinated) is female? Do Not Drink Coffee Drink Decaffeinated Only Drink Caffeinated Coffee Male 145 92 370 Female 80 128 447 70 50 554 546
5
Calculate the median percent of white persons living below poverty level. This will be the second column
Consider the following data representing the price of laptop computers (in dollars). 1365, 1240, 1371, 1052, 1238, 1293, 1043, 1393, 1416, 1035, 1092, 1428, 1288, 1175, 1098, 1083, 1313, 1300, 1060, 1120, 1116 Class 1027-1096 1097-1166 1167-1236 1237-1306 1307-1376 1377-1446 Frequency Price of Laptop Computers (in Dollars) Class Boundaries Midpoint Relative Frequency Step 3 of 7: Determine the lower class boundary for the fifth class. Copy Data Cumulative Frequency
Scores of an IQ test have a bell-shaped distribution with a mean of 100 and a standard deviation of 19. Use the empirical rule to determine the following. (a) What percentage of people has an IQ score between 62 and 138? (b) What percentage of people has an IQ score less than 43 or greater than 157? (c) What percentage of people has an IQ score greater than 157? (a) nothing% (Type an integer or a decimal.)
Which one of the following is a source of secondary data collection? a. Journals and magazines b. Information through mailed questionnaires c. Direct personal observation d. Indirect oral interviews
Students in an experimental psychology class did research on depression as a sign of stress. A test was administered to a sample of 30 students. The scores are shown below. 43 50 10 92 77 35 64 36 42 72 53 62 35 75 50 0 72 36 28 38 61 48 63 35 41 21 36 50 47 86 14 To find the 10% trìmmed mean of a data set, order the data, delete the lowest 10% of the entries and the highest 10% of the entries, and find the mean of the remaining entries. Complete parts (a) through (c). (a) Find the 10% trimmed mean for the data. The 10% trimmed mean is. (Round to the nearest tenth as needed.) (b) Compare the four measures of central tendency, including the midrange. Mean = (Round to the nearest tenth as needed.) Median = Mode = (Use a comma to separate answers as needed.) The midrange is found by the following formula. (Maximum data entry) + (Minimum data entry) Midrange =| (Round to the nearest tenth as needed.) (c) What is the benefit of using a trimmed mean versus using a mean found using all data…
The distribution of weekly production (tons) of a rice mill was as follows: Class 71-80 81-90 91-100 101-110 111-120 121-130 131-140 141-150 151-160 >160 Frequency 5 15 7 10 31 13 12 6 16 7 Find the mean, median, and mode for the given data

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