ASK YOUR TEACHERThe superintendent of a school district wants to determine if there is a statistically significant correlation betweenexpenditures and test scores. She finds the top 10 Sonoma County school districts, ranked by spending, and thetest scores shown in the table.Top 10 Sonoma CountySchool Districts by Spendingf dollarsDistrictExpenditureTest Score (API)Horicon$20,136676Fort Ross17,123767Montgomery16,539844Monte Fio14,280872Kenwood13,248871Geyserville12,499776Alexander Valley11,640894Harmony11,353863Two Rock10,406866Roseland10,059779What is the correlation between the expenditure (x) and the test score (y)? (Round your answer to four decimalplaces.)r =Is this correlation significant at either the 5% or the 1% significance level?Yes, there is a correlation. It is significant at the 1% level.Yes, there is a correlation. It is significant at the 5% level.O No, there is no significant correlation.Need Help?Reid itAdditional MaterialsTech Guide: Excel

1. To calculate the correlation coefficient, r: where SS (sum of squares) formulas…

Answered: ASK YOUR TEACHER The superintendent of…

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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Several years ago, two companies merged. One of the concerns after the merger was the increasing burden of retirement expenditures. An effort was made to encourage employees to participate in the 401(k) accounts. Nationwide, 62% of eligible workers participated in these accounts. The accompanying data table contains responses of 30 employees of the company when asked if they were currently participating in a 401(k) account. Complete parts a through d. Click the icon to view the data table. a. Determine the sample proportion of company workers who participate in 401(k) accounts. The sample proportion is (Round to three decimal places as needed.) b. Determine the sampling error if in reality the company workers have the same proportion of participants in 401(k) accounts as does the rest of the nation. The error is. (Round to three decimal places as needed.) c. Determine the probability that a sample proportion at least as large as that obtained in the sample would be obtained if the…
The boxplots below represent movie run-times (length of a movie in minutes) for movies that have been rated by the Motion Picture Associate of America as R, PG-13, PG, and G. Which movies have the largest variety in typical run-time? 80 R PG-13 PG B G 000 0 0 0 100 120 140 160 180 Runtime (in minutes) It's a tie between R and PG movies because they had the same median. PG-13 because it has the widest whiskers. PG-13 because it has the largest IQR. R because it has the most outliers.
The tuition and fees (in thousands of dollars) for the top 14 universities in a recent year are listed below. Find the mean, median, and mode of the data, if possible. If any of these measures cannot be found or a measure does not represent the center of the data, explain why. 39 43 43 47 43 35 41 41 47 47 46 43 43 41 Find the mode of the costs. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. OA. The mode(s) of the costs is (are). (Round to one decimal place as needed. Use a comma to separate answers as needed.) B. There is no mode. Does (Do) the mode(s) represent the center of the data? A. The mode(s) represent(s) the center. B. The mode(s) does (do) not represent the center because it (they) is (are) not a data value. C. There is no mode. D. The mode(s) does (do) not represent the center because it (one) is the smallest data value. O E. The mode(s) does (do) not represent the center because it (one) is the largest data value.
In Exercises, we have provided simple data sets for you to practice the basics of finding measures of center. For each data set, determine the a.mean.b.median.c.mode(s). 3, 5, 7
Given the following data set: $1.42, $1.27, $1.28, $1.48, $1.36, $1.44, $1.46, $1.32, $1.33, $1.33 $1.23, $1.38, $1.43, $1.28, $1.43, $1.49, $1.37, $1.26, $1.26, $1.38 Determine the frequencies of gasoline prices for each given class. Frequency Relative Frequency Class < $1.25 $1.25 < $1.30 $1.30 $1.35 $1.35 $1.40 $1.40 < $1.45 $1.45 CHECK ANSWER
The salaries of 5 teachers and an administrator are listed below.$48,250 $89,150 $41,625 $54,000 $63,195Which measure (mean, median, mode) is best represents the data set? Explain yourreasoning in detail.
The average number of minutes Americans commute to work is 27.7 minutes (Sterling's Best Places, April 13, 2012). The average commute time in minutes for 48 cities are as follows: Click on the datafile logo to reference the data. DATA file Albuquerque Atlanta Austin Baltimore Boston Charlotte Chicago Cincinnati Cleveland Columbus Dallas Denver Detroit El Paso Fresno Indianapolis 23.3 28.3 24.6 32.1 31.7 25.8 38.1 24.9 26.8 23.4 28.5 28.1 29.3 24.4 23.0 24.8 Jacksonville Kansas City Las Vegas Little Rock Los Angeles Louisville Memphis Miami Milwaukee Minneapolis Nashville New Orleans New York Oklahoma City Orlando Philadelphia 26.2 Phoenix 23.4 Pittsburgh Portland 28.4 20.1 32.2 21.4 23.8 30.7 24.8 23.6 25.3 31.7 43.8 22.0 27.1 34.2 Providence Richmond c. What is the mode for these 48 cities? Select your answer - Sacramento Salt Lake City San Antonio San Diego San Francisco San Jose Seattle St. Louis Tucson Tulsa Washington, D.C. 28.3 25.0 26.4 23.6 23.4 25.8 20.2 26.1 24.8 32.6 28.5…
Find the mean, median and mode of the given sample. How would the mean, and median change if the highest salar is omitted? $250,00, $300,000, $350147, $232,425, $360,000, $1,231,421, $810,000, $229,000
A statistical program is recommended. The Condé Nast Traveler Gold List provides ratings for the top 20 small cruise ships. The data shown below are the scores each ship received based upon the results from Condé Nast Traveler's Annual Readers' Choice Survey. Each score represents the percentage of respondents who rated a ship as excellent or very good on several criteria, including Shore Excursions and Food/Dining. An overall score was also reported and used to rank the ships. The highest ranked ship, the Seabourn Odyssey, has an overall score of 94.4, the highest component of which is 97.8 for Food/Dining. Shore Ship Overall Food/Dining Excursions Seabourn Odyssey 94.4 90.9 97.8 Seabourn Pride 93.0 84.2 96.7 National Geographic Endeavor 92.9 100.0 88.5 Seabourn Sojourn 91.3 94.8 97.1 Paul Gauguin 90.5 87.9 91.2 Seabourn Legend 90.3 82.1 98.8 Seabourn Spirit 90.2 86.3 92.0 Silver Explorer 89.9 92.6 88.9 Silver Spirit 89.4 85.9 90.8 Seven Seas Navigator 89.2 83.3 90.5 Silver Whisperer…
Determine whether the statement describes a descriptive or inferential statistic. A survey of 1478 people revealed that 52 % eat while they drive; therefore it can be assumed that 52 % of the U.S. population eats while they drive. 囲 Tables E Keypad Answer Keyboard Shortcu O Descriptive Statistic O Inferential Statistic
Several years ago, two companies merged. One of the concerns after the merger was the increasing burden of retirement expenditures. An effort was made to encourage employees to participate in the 401(k) accounts. Nationwide, 63% of eligible workers participated in these accounts. The accompanying data table contains responses of 30 employees of the company when asked if they were currently participating in a 401(k) account. Complete parts a through d. Click the icon to view the data table. a. Determine the sample proportion of company workers who participate in 401(k) accounts. The sample proportion is. (Round to three decimal places as needed.) b. Determine the sampling error if in reality the company workers have the same proportion of participants in 401(k) accounts as does the rest of the nation. The error is (Round to three decimal places as needed.) c. Determine the probability that a sample proportion at least as large as that obtained in the sample would be obtained if the…

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