KAn education researcher claims that at most 4% of working college students are employed as teachers or teachingassistants. In a random sample of 600 working college students, 6% are employed as teachers or teaching assistants.At a=0.10, is there enough evidence to reject the researcher's claim? Complete parts (a) through (e) below.ⒸD. More than% of working college students are employed as teachers or teaching assistants.Let p be the population proportion of successes, where a success is a working college student who is employed asa teacher or teaching assistant. State Ho and H₂. Select the correct choice below and fill in the answer boxes tocomplete your choice.a(Round to two decimal places as needed.)OA. Ho:p>H₂:psOD. Ho: psH₂:p>OB. Ho: P#0Ha:p=THINOE. Ho P=H₂:p #OC. Ho: p²H₁: p<OF. Ho: P<H₂: p²

Given: Sample size is N = 600 Hypothesized population proportion (p0) = 4 % = 0.04 Sample proportion…

Answered: An education researcher claims that…

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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An education researcher claims that at most 7% of working college students are employed as teachers or teaching assistants. In a random sample of 500 working college students, 9% are employed as teachers or teaching assistants. At a= 0.01, is there enough evidence to reject the researcher's claim? Complete parts (a) through (e) below. Let p be the population proportion of successes, where a success is a working college student who is employed as a teacher or teaching assistant. State H, and H,. Select the correct choice below and fill in the answer boxes to complete your choice. (Round to two decimal places as needed.) O A. Ho: p 0.07 O D. Ho: p> H: ps H p# OF. Ho: pz OE Ho: p# H p= H:p O D. The rejection regions are z
A sociologist is interested in the opinion of Minnesota teachers on the recent labor union law passed by Wisconsin lawmakers. a. What is the experimental unit? b.What is the population? c.What are the variables relevant to this study? Classify them as continuous, discrete, nominal, or ordinal. d. Explain how you would select a sample for this study. Explain pros and cons of your method.
Support for the U.S. death penalty for convicted murderers was 63% in 2014 (Gallup poll results 2018). In a recent survey of 150 randomly selected U.S. adults, 75 said they were in favor of the death penalty for those convicted of murder. Does this sample appear to come from a population with a lower proportion in favor of the death penalty? d) Say that a = 0.05, what does this mean. Explain in the context of the problem. e) What would it mean to make a type II error? Explain in the context of this problem. f) Use a 0.05 significance level to test the claim. State your conclusion AND interpret your results.
3. Can SAT scores predict college performance? Let x be a variable that represents SAT score of a computer science major, and let y be a variable that represents a student’s GPA upon graduation. A random sample of n =15 computer science majors provided their SAT scores and GPAs: x 1232 1070 1086 1287 1130 1048 1121 1095 1135 1208 1333 1160 1186 1243 1261 y 3.52 2.91 2.4 3.47 3.47 2.37 2.4 2.24 3.02 3.32 3.59 2.54 3.19 3.71 3.58 The scatter diagram for the SAT score and GPA is given below: (a) Find the sample correlation coefficient r. Truncate to two decimal places. What does the value tell you about the data? (b) Find the equation of the least squares line . Truncate to four decimal places. What does the slope mean? (c) Find the value of the coefficient of determination . Truncate to two decimal places. What does this number mean? (d) What is the predicted GPA if a computer science major got a…
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10.59 To tip or not to tip. A study of tipping behaviors examined the relationship between the color of the shirt worn by the server and whether the customer left a tip. 12 There were 418 male customers in the study; 40 of the 69 who were served by a server wearing a red shirt left a tip. Of the 349 who were served by a server wearing a different colored shirt, 130 left a tip. a. Find the proportion of tippers for the red-shirted servers and the proportion of tippers for the servers with other colored shirts. b. Find a 95% confidence interval for the difference in proportions. a. Give a null hypothesis for this setting in terms of the parameters. Explain the meaning of the null hypothesis in simple terms. b. Give an alternative hypothesis for this setting in terms of the parameters. Explain the meaning of the alternative hypothesis in simple terms. Give a reason for your choice of this particular alternative hypothesis. c. Are the conditions satisfied for the use of the significance…
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None
A B This graph has an r of -0.5. C D

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