The survey has bias. (a) Determine the type of bias. (b) Suggest a remedy.Suppose you are conducting a survey regarding activity level of children in a school district. You obtain a cluster sample of 19 schools within a school district andsample all sophomore students in the randomly selected schools. The survey is administered by the teachers.(a) Which of these best desscribes the bias in the survey?Nonresponse biasUndercoverage biasSampling biasResponse bias(b) How can the bias be remedied?O A. The survey should be administered by an impartial party.B. The survey should include the teachers.C. The survey should include a greater number of schoolsD. The survey should be administered to a random sample, not a cluster sample.pe here to search..**23

For the given statement select correct choice

Answered: The survey has bias. (a) Determine the…

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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Multiple Choice Question Identify the bias that is most present in the following scenario: Students are asked by their teacher whether they had ever cheated on a test and are required to respond. A. Response B. Nonresponse C. Selection
QUESTION The table below shows the two-way classification of 400 undergraduate students who were randomly selected from Namibia University of Science and Technology (NUST). Number of cigarettes Level of cardio-vascular problems NUiSOncf smoked per day None Moderate Severe Liome Less than 5 98 32 15 kI5 5 - 10 62 32 56 150 More than 10 20 25 60 105 180 89 LL00 Test, at 5% significance level, whether level cardio-vascular problems is related to number of cigarettes smoked per day among these students.
Online customer service is a key element to successful online retailing. According to a marketing survey, 30% of online customers take advantage of the online customer service. Assume the population proportion of those who use online customer service is 0.30. Random samples of 100 customers are selected. 95% of the sample proportions centered symmetrically about the sampling distribution mean will be between _________________ and _________________.
Multiple Choice Question Identify the type of sampling used in the following scenario: To conduct a study on depression among the elderly, a sample of 30 patients in one nearby nursing home was used. A. Simple Random B. Voluntary Response C. Stratified D. Convenience
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Scenario: An early childhood education student is undertaking an observational study of literacy development among kindergardeners in Rancho Cordova. The school she is placed at has 230 students in 12 classrooms Short Answer A. Describe a way she can take a stratified sample. B. Describe what the explanatory and response variables may be. C.A convenience sample is taken and introduces nonrandom sampling error. What is one way this can happen?
A marketer is examining the effectiveness of color scheme on the willingness to subscribe to a user's social media account. She creates three different profiles using three different color schemes: red, blue, and green. Twenty participants are asked to evaluate how much they like each of the profiles using a scale of 1 (do not like) to 5 (like a lot). What statistical procedure should you use to analyze these data? O independent groups t test O correlated groups t test O One Way Between Subjects ANOVA O One Way Repeated Measures ANOVA
Textbook question for practise - A behavioural psychologist has developed a cognitive-behavioural therapy (CBT) technique modified from classic systematic desensitization to reduce her patients’ phobia of spiders. She decides to test the effectiveness of her new therapy approach by selecting ten patients at random to undergo the treatment for 3 months. The patients were asked to rate how much fear they feel/experience when in the presence of a spider/spiders using a scale from 0 (no fear at all) to 100 (extreme panic and fear). They were tested before and after the therapy. The ratings for each patient are as follows: For this question, be sure to do the following: ▪ State the statistical hypotheses (using the appropriate notation). ▪ Indicate whether the research hypothesis is non-directional or directional (and how you know). ▪ Set the decision rules, which will include: o State alpha - 0.05% o Compute the degrees of freedom o Providing the critical value for the test statistic…
Compare and contrast (a.) single-sample t tests, (b.) paired sample t tests, and (c.) independent sample ttests in terms of participants recruited, data collected from each participant, and information we need toconduct the analysis.
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SAMPLING Sample s Fiammant Source Saunders er al (2009) 1. Explain your understanding on the key elements as presented in Figure 1. 2. When developing a questionnaire, identify the possible bias that will lead for the occurrence of unethical issues in terms of: Researcher Respondent Measurement 3. Identify the sources of error in the questionnaire development.

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