人工知能を使用せず、すべてを段階的にデジタル形式で解決してください。ありがとうSOLVE STEP BY STEP IN DIGITAL FORMATDON'T USE CHATGPTTo find out the validity of a given reading test, the researchers administered it to a sample of 20 students whosereading ability had previously been ranked by their teacher. The exam score and rank the teacher gave for eachstudent are listed below:StudentABCDEFGHIIKLMNOPORSTJX(Reading score)2850928576694253809173741429867339809172Y(Teacher rank)1817P999968CANONGE101112201916131514What statistical procedure could be applied to determine the degree of association between reading scores andteacher categorization?

The variables under study are Reading score Teacher rankThe sample of students is collected for…

Answered: To find out the validity of a given…

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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Suppose you were to collect data for the following pair of variables, ski diving: depth, visibility. You want to make a scatterplot. Which variable would you use as the explanatory variable? depth visibility Which variable would you use as the response variable? O depth O visibility Would you expect to see a positive or negative association? positive negative O neither
Research Study: The following data collected lists the typing speed as measured by a standard typing test for 5 college students, along with the number of pages they had to type for their project.Instructions: Use the data collected to compute the values listed in Table#1. Use .05 significance. Research Data Collected: Student Number of pages typed Typing speed Chris 37 70 Mary 6 54 Paul 12 25 Juan 34 42 Marcelo 16 35 Table #1 1. SP 2. r2 3. ∑x 4. ∑y 5. SSx 6. SSy 7. a 8. b 9. F ratio 10. F critical (value from F table)
A sample of 200 college undergraduates was collected and the student’s gender and method of getting to class that day were collected. The data appears below. Gender Drive Bike Walk Total Male 95 10 10 115 Female 65 5 15 85 Total 160 15 25 200 What proportion of the students are both female and ride a bike to class?
.
A survey was given to 18 employees. One question asked about the one-way distance the employee had to travel for work. The results, in kilometers, are shown below. Kilometers Traveled for Work 12 10 18 3 4 28 5 32 26 10 41 85 1 7 8 5 10 15 Find the first quartile of the data.
Let’s talk about grades. Below is a collection of grades randomly selected from the students taking a statistics final exam administered to all students taking statistics at one college in one particular year. 69 70 70 72 73 73 76 77 77 7878 79 80 80 8081 82 82 83 8488 89 92 93 94 1. The 25 student scores above would represent... A.a sample statistic B.a parameter C.a census D.a population E.a sample 2.The professor wants to analyze the results of these grades. Find the median grade for the students. 3.Assume that the distribution is approximately normal with a mean and standard deviation of 80 and 7 respectively. What is the probability that a student would score higher than a 90 on the final? 4.
A group of students were asked how many times they exercised in the past week. The results were: 0,0,0,0,0,1,1,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,4,5,6,7,7,7. a. Construct a histogram summarizing the data. Use [0,2), [2,4), etc. as the bins b. Describe the shape and the modality of the histogram.
The data on the number of chocolate chips per bag for 42 bags of Chips Ahoy! cookies were obtained by the students in an introductory statistics class at the United States Air Force Academy in response to the Chips Ahoy! 1,000 Chips Challenge sponsored by Nabisco, the makers of Chips Ahoy! Use the data collected by the students to answer the following questions and to conduct the analyses required in each part. They found æ = 1261.6 and s = 117.6 a. Determine a 95% confidence interval for the mean number of chips per bag for all bags of Chips Ahoyl cookies. b. Interpret your result in words. C. Can you conclude that the average bag of Chips Ahoy! Cookies contain at least 1000 chocolate chips? O yes Ono Ads in 4 d. Explain why or why not. + SAVE MacBook Pro FR.IEN DS DII DD F12 F11 F8 F9 F10 F7 F5 ) 7 8 9. %3D dela { } Y U P [

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