Many times property value appraisers estimate the value of specific properties with minor or sometimesmajor difference. A company that builds apartment buildings in Athens considers two appraisers, A and B.who give an estimate of the sale price of their apartments. The sales department of the company has observedthat in most cases appraiser A gives smaller value estimates of their apartments. The company would like toknow if this is true for estimated values of apartments of other companies. Let X₁ be the appraisal value ofan apartment of other companies by appraiser A. Let X2 be the appraisal value of an apartment of othercompanies by appraiser B. Also, let D=X₂-X₁. The company selected a random sample of apartments ofother companies. Let be the appraisal value of each apartment in the sample by appraiser A. Let *2 bethe appraisal value of each apartment in the sample by appraiser B. The measurements and *2 are inthousands of euros and are given below. Let d=x₂-x. At the 5% level of significance, do these dataprovide enough evidence to conclude that the mean estimation of the appraisal values of apartments byappraiser A is smaller than the mean estimation of the appraisal values of apartments by appraiser B?x₂apartment1234567891011121314151617181920x₁187170162144180143217198178211209205205189162184174186145209X₂186167163153189149220196184215222204192183166187176177153209apartment21222324252627282930313233***********34353637383940x₁192174139160188189193223177197183160186178166187184141162140X₂195179144159190190198223173200188174187190175202179147164148apartment414243444546474849505152535455565700 O585960X₁183164198205190211209196160187228166189213184180148165178180ܕ1811641932011882071971911641862211621892271891741551691851843 Question 8 Write the number that corresponds to the correct answer.Specify the null and the alternative hypotheses.Ho: Ma>0, H₁: Ma<02. Ho: M₁ = 0, H₁: Mg>03. Ho: Ha=0, H₁: Mg <0Ho: Ma <0, H₁Hd > 01.4.5.Ho Hd=0, H₁: Md #0

Null hypothesis and alternative hypothesis for two samples : Null hypothesis : In null hypothesis we…

Answered: Question 8 Write the number 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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Research Question: Is there a difference between the average height of male and female basketball players in the club? 28 male and 25 female basketball players from the club were randomly selected. Use the following image to answer the questions below. Carry out an appropriate hypothesis test to answer the above Research Question. Q1) The null and alternative hypotheses are : Choose one from below -H0: μ = 0, H1: μ ≠ 0 -H0: μ = 170, H1: μ ≠ 170 -H0: μm- μf = 167.489, H1: μm- μf ≠ 167.489 -H0: μm- μf = 0, H1: μm- μf ≠ 0 H0: μm- μf = 170.27, H1: μm- μf ≠ 170.27 Q2) What is the assumption you need to make ? Choose one from below -The shape of the histogram indicates that the scores may be from a normal distribution and/or the sample size is reasonably large so the sample mean will be from a normal population -None of these -Since nπnπ and n(1−π)n(1−π) are both ≥5, the Central Limit Theorem applies and we can assume that p arises from a normal distribution -The boxplots…
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The national average SAT score is roughly 1500. We would like to see if the high school seniors who apply to Duke have higher than average SAT scores. We randomly sample 100 applicants' files and record their SAT scores. Which of the following is the correct set of hypotheses for this research question? Hint: think about how many samples we have data from. H0: μ = 1500; HA: μ ≠ 1500 H0: p = 1500; HA: p > 1500 H0: μ Duke= μ National; HA: μ Duke> μ National H0: x = 1500; HA: x > 1500 H0: μ = 1500; HA: μ > 1500
Refer image to questions -What is the appropriate test to answer this question? -The null and alternative hypotheses are (choose from below) H0: π = 0.7, H1: π ≠ 0.7 H0: β = 0, H1: β ≠ 0 H0: μ = 0, H1: μ ≠ 0 H0: μ = 70, H1: μ ≠ 70 H0: μ1- μ2 = 0, H1: μ1- μ2 ≠ 0 - How can you justify the assumption for this test? (choose from below) -Since nπ and n(1-π) are both ≥5, the Central Limit Theorem applies and we can assume that p arises from a normal distribution -The shape of the histogram indicates that the scores may be from a normal distribution and/or the sample size is reasonably large so the sample mean will be from a normal population -The boxplots indicate that the samples are fairly symmetric and the spreads are similar, so we can assume both sets of data come from normal distributions with the same spread -The points are randomly scattered around a straight line, so the assumptions of linearity and constant spread are satisfied. The shape of the histogram indicates that the…
You are a crime scene investigator trying to match the lead content of bullet fragments found at a crime scene to the lead content of a box of bullets found with a suspect. To simplify this question, assume that the instrument you use gives you one measurement per fragment in grams/cm3. Assume that you have 5 measurements from fragments found at the crime scene and 7 measurements from bullets found with the suspect. (a) What type of hypothesis test will you use?
the national average SAT score is roughly 1500. We would like to see if the high school seniors who apply to Duke have higher than average SAT scores. We randomly sample 100 applicants' files and record their SAT scores. Which of the following is the correct set of hypotheses for this research question? Hint: think about how many samples we have data from. H0: μ = 1500; HA: μ ≠ 1500 H0: p = 1500; HA: p > 1500 H0: x = 1500; HA: x > 1500 H0: μ Duke= μ National; HA: μ Duke> μ National H0: μ = 1500; HA: μ > 1500
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● Question 3 Only about 10% of all people can wiggle their ears. Is this percent different for millionaires? Of the 379 millionaires surveyed, 30 could wiggle their ears. What can be concluded at the a = 0.01 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: 80 F3 Ho: ? Select an answer ✓ H₁: ? Select an answer ✓ c. The test statistic ? ✓ = d. The p-value = e. The p-value is ? ✓ a f. Based on this, we should [Select an answer the null hypothesis. g. Thus, the final conclusion is that ... Submit Question (please enter a decimal) O The data suggest the population proportion is not significantly different from 10% at a = 0.01, so there is statistically insignificant evidence to conclude that the population proportion of millionaires who can wiggle their ears is different from 10%. $ (Please enter a decimal) O The data suggest the populaton proportion is significantly different from 10% at a = 0.01, so there is…

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Question 8 Write the number that corresponds to the correct answer. Specify the null and the alternative hypotheses. Ho: Ma>0, H₁: Ma<0 2. Ho: M₁ = 0, H₁: Mg>0 3. Ho: Ha=0, H₁: Mg <0 Ho: Ma <0, H₁Hd > 0 1. 4. 5. Ho Hd=0, H₁: Md #0