Statement 1: The statement there is a significant difference betweenmales and females in their level of optimism is a statement about thesamples. Statement 2: The farther away a sample mean is from thepopulation mean, the more evidence there would be for accepting the nullhypothesis. *BOTH Statements are TRUEBOTH Statements are FALSEONLY Statement 1 is TRUEONLY Statement 2 is TRUE Statement 1: With an F-value = 2. 781 and Cl of 2. 932 at @.05, we use thePOOLED Formula Statement 2: A research hypothesis states the existenceof a difference between two parameters.BOTH Statements are TRUEBOTH Statements are FALSEONLY Statement 1 is TRUEO ONLY Statement 2 is TRUE

Answered: Image /qna-images/answer/e32255ff-afb4-4e60-ac79-7d9ced8bda95.jpg

Answered: Statement 1: The statement there is a…

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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You are management for a chain of department stores. Your analytics team believes that the proportion of months with lost sales for one of your department stores is 25%. You believe it is higher than this, so you gather some data for the last 4 years. You find that for 48 months there were 17 months where there were lost sales. Do you have enough evidence to doubt your analytics team? a) What is the null hypothesis? b) What is the alternative hypothesis? c) What is the claimed population proportion? d) What is the sample proportion (called the test statistic) e) What is the std deviation f) What is the z-value of the test statistic? g) What is the p-value h) What is the conclusion in words
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please answer a, b, c
Which of the following statements about Type 1 and Type 2 error is false? They are both a form of chance error. They are both represented using Greek letters. They are both a form of systematic error. Ideally you should try to keep both as low as possible in your study.
Statistics is not about getting accurate results. It is about Finding sufficient evidence to prove that your null hypothesis (Ho) is correct Gathering data about the population Finding sufficient evidence to prove that your null hypothesis statement is wrong
‏......... is a theory based on insufficient evidence that requires further testing to prove whether the observed data false . Select one : a . Hypothesis b . All the above points c . Variables d . Null Hypothesis
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A student compared organic food prices at Grocery 1 and Grocery 2. The same items were priced at each store. The first three items are shown in the accompanying Figure A. Choose the correct accompanying output (B or C) for the appropriate test, explaining why you chose that output. Then test the hypothesis that the population means are not equal using a significance level of 0.05. Assume i Figure A and Outputs Click the icon to view Figure A and the outputs. Which is the correct output (B or C) for the appropriate test? Explain. (Figure A) Food Grocery 1 0.89 Grocery 2 0.99 A. Output B is appropriate because the data are paired samples. Bananas/1 Ib Grape tomatoes/1 Ib Russet potato/5 Ib 4.19 4.49 B. Output C is appropriate because there are two samples. 4.69 4.49 C. Output B is appropriate because n2 25. (Figure B) D. Output C is appropriate because the data are independent samples. N Mean StDev SE Mean Test the hypothesis that the population means are not equal using a significance…
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It is a hypothesis which is tested for the purpose of rejection under the assumption that it is true. A. Alternative hypothesis B. Composite hypothesis C. Null hypothesis D. Statistical hypothesis
unrest and violence on one southern campus had descreased by 62% from 10 years ago. four out of ten americans rush their teeth daily. which of the following is true regarding these two statements? A. these statements are derived from inductive statistics B. all of the given statements are sample parameters rather than population statistics C. statistics, from one of its definitions, constitutes a collection of such statements D. these types of statements are usually found to be examples of lying with statistics E. none of these is correct
What are the null and alternative hypotheses? A.H0: The racial distribution is the same in at least two of the four regions. Ha: The racial distribution is not the same in at least two of the four regions. B. H0: The racial distribution is the same in each of the four regions. Ha: The racial distribution is not the same in each of the four regions. C. H0:The racial distribution is not the same in each of the four regions. Ha:The racial distribution is the same in each of the four regions. D. H0: The racial distribution is not the same in at least two of the four regions. Ha: The racial distribution is the same in at least two of the four regions. Find the test statistic. χ2= (Round to three decimal places as needed.) Find the P-value. P= (Round to three decimal places as needed.) Choose the correct conclusion below. A. Do not reject H0. The data do not provide sufficient evidence that there is a difference. B. Do not reject…

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