A college professor is interested in finding out if there is a relationship between the post-test scores of students inAlgebra and Calculus when a technology-based method was used in solving. Use 5% level of significance.Data are given below in percentage.StudentAlgebraCalculusXYx2y2183786474688960848083664064006889397959215940990254959792159025940978876786608475698987774379217569777765852592957768193753365618649Total6806965945858218609705.00 Which of following is the can be conclusion for the value of r?Select the correct response:As the students' score on Algebra increases, the score on Calculus decreases.There is no association between the scores on Algebra and Calculus.As the students' score on Algebra decreases, the score on Calculus also decreases.As the students' score on Algebra increases, the score on Calculus also increases.

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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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Use this dataset for your analysis software.Cost-to-charge ratio (the percentage of the amount billed that represents the actual cost) for inpatient and outpatient services at 11 Oregon hospitals is shown in the following table. A scatterplot of the data is also shown. Cost-to-Charge Ratio Hospital OutpatientCare InpatientCare 1 62 80 2 66 76 3 63 75 4 51 62 5 75 100 6 65 88 7 56 64 8 45 50 9 48 54 10 71 83 11 54 100 The least-squares regression line with y = inpatient cost-to-charge ratio and x = outpatient cost-to-charge ratio is = -1.1 + 1.29 x. (a) Is the observation for Hospital 11 an influential observation? Yes or No (b) Is the observation for Hospital 11 an outlier? Yes or No (c) Is the observation for Hospital 5 an influential observation? Yes or No (d) Is the observation for Hospital 5 an outlier? Yes or No
Find the 5 number summary for the data shown x 3.9 5.4 6.5 8.9 11.3 11.8 24.6 27.8 28.4 5 number summary:3.9 ____, ______, ______, 28.4Use the Locator/Percentile method described in your book, not your calculator
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Use the coefficient of variation to determine whether coffee prices or gasoline prices were more stable in 2015. Use the population standard and population mean of each set of data. What is the coefficient of variation for the price of a pound of coffee and a pound of gasoline?
I need help with 5 a,b,c
Why the number of days spent in hospital is a data measured at an interval and not ordinal level?
Find the 5 number summary for the data shown 13 24 27 28 38 45 46 48 52 78 84 90 5 number summary: Use the Locator/Percentile method described in your book, not your calculator. Add Work Check Answer
A sales manager recorded the number of sales made by each of the 300 salespeople working athis chain of furniture outlet stores on a Saturday and created the following table.# Sales (bins) Proportion of salespeople in this bin0 – 3 0.053 – 6 0.156 – 9 0.30 9 – 12 0.3512 -15 0.15a. What is the unit of observation in this sample?b. What is the variable collected?c. Draw and label the histogram for this dataset.d. Which is the modal category?e. Calculate the proportion of the salespeople made 9 or more sales.f. Calculate the number of salespeople who made between 0 and 9 sales.
Are cigarettes bad for people? Cigarette smoking involves tar, carbon monoxide, and nicotine (measured in milligrams). The first two are definitely not good for a person's health, and the last ingredient can cause addiction. Use the data in the table above to make a stem-and-leaf display for milligrams of tar per cigarette smoked. (Enter NONE in any unused answer blanks.) Are there any outliers? A. Yes, 1.0 may be an outlier. B. No, there are no outliers. C. Yes, 29.8 may be an outlier.
Researchers wondered whether the size of a person's brain was related to the individual's mental capacity. They selected a sample of 5 females and 5 males and measured their MRI image pixel counts and IQ scores. Females Males MRI IQ MRI IG The data is reported to the right. Complete parts (a) through (d) below 139 858,472 140 955,003 935,494 924,059 1.079.550 1,001.121 Click the icon to view the critical values table. 991,305 138 141 857,782 833,868 790,619 133 135 132 141 135 140 AMRI 1,080,000- AIO 145 AIO 145- AMRI 1,080,000 780,000 130 130 780,000 130 780,000 780,000 130 1,080,000 145 1,080,000 MRI 145 MRI (b) Compute the linear correlation coefficient between MRI count and IQ. Are MRI count and IQ linearly related? Select the correct choice below and, if necessary, fill in the answer box to complete your choice. (Round to three decimal places as needed.) A. Yes, MRI count and IQ are linearly related since the linear correlation coefficient is O B. No. MRI count and IQ are not…
What is the range of the data set? {6.2,9.1,2.9,1.6,9.3,5.5,8.3} Enter your answer as a decimal, rounded to the nearest tenth, like this: 4.2
Find the 5 number summary for the data shown 17 21 29 30 36 42 56 60 88 91 94 97 5 number summary:Use the Locator/Percentile method described in your book, not your calculator.

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