The school district decides it will be easier to understand the scores if they are converted to a 100-point scale. This requires that each score bemultiplied by 4.Calculate the new n, XX, and M.n-EX-M = 4. Calculating the mean when multiplying or dividing by a constantA school district is deciding whether or not to adopt a new social skills curriculum. Three classrooms are randomly selected as test sites for thecurriculum. To obtain a measure of student improvement, students in the three classrooms are tested on their social skills before and after thecurrículum is implemented.The social skills test has 25 possible points. The post-implementation scores for the students in the first classroom are shown in the following table:n-EX-22 21 16 18 15 23 17 24Calculate the sample size, n; the total sum, 2X; and the sample mean, M.M-2019 22 11Activate WincSetta

The given data is as follows:22, 21, 16, 18, 15, 23, 17, 24, 20, 19, 22, 11

Answered: 4. Calculating the mean when…

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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I have answered this sample sheet but I just want to make sure my answers are right. Can you show me your answers? Thank you! 1. Exploratory Data Analysis refers to A. a set of procedures for producing descriptive and graphical summaries of the data. B. a set of summaries for producing descriptive and graphical procedures of the data. C. a set of procedures for producing descriptive and written summaries of the data. D. a set of procedures for producing descriptive and graphical summaries of the data. 2. Which of the following choices are referred to as categorical data? A. nominal and interval B. nominal and ordinal C. ordinal and interval D. interval and ratio 3. Which of the following choices are referred to as continuous data? A. ordinal and ratio B. nominal and ratio C. ordinal and interval D. interval and ratio 4. Which of the following choices is NOT a property of an ordinal data? A. represent discrete units B. values are inherently ordered C. has absolute zero D. none…
Cris Turlock owns and manages a small business in San Francisco, California. The business provides breakfast and brunch food, via carts parked along sidewalks, to people in the business district of the city. Being an experienced businessperson, Cris provides incentives for the salespeople operating the food carts. This year, she plans to offer monetary bonuses to her salespeople based on their individual mean daily sales. Her first task is to see if there is a significant difference in the mean daily sales among the different salespeople. She chooses a "sample" of days for each salesperson and records the sales for each day. She then runs a one-way, independent-samples ANOVA test to determine whether or not she can conclude that at least one salesperson's performances is significantly different from the others. (Otherwise, she'll split the bonuses evenly among all the salespeople.) In her ANOVA, the "groups" are the different salespeople, and the variable of interest is the daily sales…
Jocelyn believes that the amount of sleep she tends to get on weekends differs from the amount of sleep she tends to get during the school week. To investigate this claim, she randomly selects 10 weekend days and 10 school days. She consults her smart watch to determine the number of hours she slept for each of the selected days. Here are the data. School week: 7, 7.5, 8, 6.5, 8, 7.5, 7, 6.5, 7, 8Weekend: 9.5, 9.5, 8.25, 8.5, 7.5, 10.25, 8, 7, 9.5, 10 Jocelyn would like to determine if these data provide convincing evidence that the true mean amount of sleep she gets on the weekend differs from the true mean amount of sleep she gets during the school week. She tests H0: μS – μW = 0, Ha: μS – μW ≠ 0, where μW = the true mean amount of sleep Jocelyn gets on the weekend and μS = the true mean amount of sleep she gets during the school week. The conditions for inference are met. What are the values of the test statistic and P-value for a t-test about a difference in means? Find the…
The world Almanac and book of facts 2004 reported the percentage of people not covered by health insurance in the 50 states and Washington DC for the year 2002.the percent of people not covered by health insurance is summarized in the table below: Min 7.9 Q1 10.8 Median 13.4 Q3 16.7 Max 25.8 Mean 13.9 Std.dev 3.6
What is the degree of freedom (sd) in the analysis of a 4-by-5-dimensional table that is summarized by counting the data? Please select one: a. 12 b. 18 c. 19 d. 15 e. 20
Cris Turlock owns and manages a small business in San Francisco, California. The business provides breakfast and brunch food, via carts parked along sidewalks, to people in the business district of the city. Being an experienced businessperson, Cris provides incentives for the four salespeople operating the food carts. This year, she plans to offer monetary bonuses to her salespeople based on their individual mean daily sales. Below is a chart giving a summary of the information that Cris has to work with. (A "sample" is a collection of daily sales figures, in dollars, from this past year for a particular salesperson.) Groups Sample size Sample mean Sample variance Salesperson 1 143 204.8 2382.8 Salesperson 2 97 209.9 2501.3 Salesperson 3 53 218.3 2461.6 Salesperson 4 95 205.8 2373.9
Net Worth. The Board of Governors of the Federal Reserve System publishes information on family net worth in the Survey of Consumer Finances. In 2010, the mean net worth of families in the United States was $498.8 thousand and the median net worth was $77.3 thousand. Which measure of center do you think is more appropriate? Explain your answer.
1. A data set has 8 data points. If the data values are written in order from smallest to largest, which value is the median? O A. the 4th value OB. the mean of the 4th and 5th values O C. the 5th value OD. the mean of the 5th and 6th values
Hospitals In a study of births in New York State, data were collected from four hospitals coded as follows: (1) Albany Medical Center; (1438) Bellevue Hospital Center; (66) Olean General Hospital; (413) Strong Memorial Hospital. Does it make sense to calculate the average (mean) of the numbers 1, 1438, 66, and 413?
Determine what the key terms refer to in the following study. We want to know the average (mean) amount of money first year college students spend at ABC College on school supplies that do not include books. We randomly surveyed 100 first year students at the college. Three of those students spent $150, $200, and $225, respectively.

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