What I Can DoActivity 4. Hypothesis Pa More!Directions: For each of the following, identify the random variable/s and formulate the nulland altemative hypotheses (in words and symbols).1. The federation of private school teachers has developed anew evaluation instrument that they claim has higher Teacherreliability by producing less error in evaluation. In the past, theHANDBOOK ONEvaluation omean number of errors in the evaluation was 20%.ASSESSINGand IMPROVINGPERFORMANCEHo:H1:Photo is taken from https://www.routledge.com/Handbook-on-Teacher-Evaluation-with-CD-ROM/Stronge-Tucker/p/book/9781930556584

It is given that Claim: Higher reliability by producing less error in evaluation was 20%.

Answered: 1. The federation of private school…

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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UBS Wealth Management UK periodically ask their customers to evaluate their financial consultants and services. The higher the customer rating, the better the perceived service. The maximum rating is 7. Independent samples of two financial consultants are given below. Consultant A has 10 years' experience, Consultant B has 1 years' experience. Use α = 0.05 and test to see whether the consultant with more experience has the higher population mean service rating. Consultant A Consultant B N1 = 16 N2 = 10 Mean1 = 6.82 Mean2 = 6.25 S1= 0.64 S2 = 0.75 State the null and alternative hypothesis, Compute the value of the test statistic. What is the p-value? What is your conclusion?
When a t-test is used to compare pre- and post-treatment data. What does the t-test reveal about the difference between baseline and treatment?
Explain in simple words the difference between the Causal and Correlated metric types.
9. You are conducting an experiment on the effectiveness of a reading intervention with young children and want to report the descriptive results to your colleagues. Some of the children received the inter- vention, and some did not. What do the averages and standard deviations tell you about the results? For this exercise, use the data in Chapter 3 Data Set 2. No Intervention 18 16 17 15 16 14 22 21 7 24 23 19 12 20 23 Intervention 17 15 21 24 12 16 14 25 19 24 21 25 9 9 13
Suppose the observational units in a study are the patients arriving at an emergency room on a given day, Nov 11, 2019. Number of patients that arrive before noon is a qualitative variable is a quantitative variable is not a variable
Report an appropriate hypothesis test for a positive linear relationship and use a 5% significance level. Explain the potential error in words, in context. In the answer options below I have used the phrase “a certain relationship” because I don’t want to give away exactly what type of relationship it is. Group of answer choices We would be accepting that there was a certain relationship between Sale amount and Tip when actually there wasn’t. We would not be accepting that there was a certain relationship between Sale amount and Tip when indeed there wasn’t. We would not be accepting that there was a certain relationship between Sale amount and Tip when actually there was. We would be accepting that there was a certain relationship between Sale amount and Tip when indeed there was.
Can someone answer g.) h.) and i.) please?
1. Eric is interested in investigating the relationship between "happiness" and "helping behavior". He proposes to send the self-administration questionnaire to his friends for data collection. What is the data collection technique used in Eric's study? Please state ONE advantage and ONE disadvantage for this technique Which type of relationship is expected to find in Eric's study (correlation or causation)? Suggest the possible result of this study. How will you interpret the result?
. Present a description of your variables: Provide a codebook with the following four columns: (1) Variable name; (2) Variable label; (3) Value & Value label and Level of measurement (i.e., nominal, ordinal, interval, ratio). Please present this as a table. This should fit on one page.
Several studies showed that after eating a low-fat cereal for two meals a day, subjects had lost some weight.A cereal companyfinanced this research. Identify what is wrong. Choose the correct answer below. A. Since the research is composed of voluntary response samples, there may be key data points missing. B. The data used in the studies is not reliable because it was not measured by the administrator. C. It is questionable that the sponsor is a cereal company because this sponsor can be greatly affected by the conclusion. D. It is not possible to take accurate measurements.
Suppose you computed r=-0.524 with 20 data points. Is r significant? Explain. 0.05 significance level. Your Answer:

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