01:22:15A real-estate agent conducted an experiment to testthe effect of selling a staged home vs. selling an emptyLet µ = the true mean selling price of all empty homesand u, = the true mean selling price of all stagedhomes. What are the appropriate hypotheses?home. To do so, the agent obtained a list of 10comparable homes just listed for sale that werecurrently empty. He randomly assigned 5 of the homesto be "staged," meaning they were filled with niceHo: Hi - Hz =0, Hg: Hi - Hz < OHọ: H4 - H2 =0, Hai µ1 - Hz>0furniture and decorated. The owners of the 5 homes allHọ: 81 – 82 = 0, Hgi 81- 82 < 0agreed to have their homes staged by professionaldecorators. The other 5 homes remained empty. TheHọ: X1 – 82 = 0, Ha: X1 – 82 > 0hypothesis is that empty homes are not as appealingto buyers as staged homes and, therefore, sell forlower prices than staged homes. The mean sellingprice of the 5 empty homes was $150,000 with astandard deviation of $22,000. The mean selling priceof the 5 staged homes was $175,000 with a standarddeviation of 35,000. A dotplot of each sample showsno strong skewness and no outliers.SubmitNextSave and ExitMark this and return

To identify the correct Hypothesis

Answered: 01:22:15 A real-estate agent conducted…

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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A student organization surveyed both current students and recent graduates to obtain information on the quality of teaching at a particular university. An analysis of the responses provided the following teaching-ability rankings. Professor O Ho: Ps+0 H₂: Ps=0 O Ho: Ps ≤0 Ha: P >0 1 Ho: Ps > 0 H₂: Ps=0 2 Ho: Ps= 0 Ha: Ps * 0 3 4 5 6 7 9 10 Current Students 4 6 8 3 1 2 5 10 7 9 Recent Graduates 6 8 5 1 2 3 7 Do the rankings given by the current students agree with the rankings given by the recent graduates? Compute the rank correlation between current students and recent graduates. (Round your answer to three decimal places.) 9 Use α = 0.10 and test for a significant rank correlation. State the null and alternative hypotheses. O Ho: P₂ ZO Ha: Ps <0 10 4 Find the value of the test statistic. (Round your answer to two decimal places.) Find the p-value. (Round your answer to four decimal places.) p-value= What is your conclusion? O Reject Ho. There is not sufficient evidence to conclude…
A survey was conducted to determine whether hours of sleep per night are independent of age. A sample of individuals was asked to indicate the number of hours of sleep per night with categorical options: fewer than 6 hours, 6 to 6.9 hours, 7 to 7.9 hours, and 8 hours or more. Later in the survey, the individuals were asked to indicate their age with categorical options: age 39 or younger and age 40 or older. Sample data follow. Age Group Hours of Sleep 39 or younger 40 or older Fewer than 6 38 36 6 to 6.9 60 57 7 to 7.9 76 74 8 or more 66 93 (a) Conduct a test of independence to determine whether hours of sleep are independent of age. (b) What is your estimate of the percentages of individuals who sleep fewer than 6 hours, 6 to 6.9 hours, 7 to 7.9 hours, and 8 hours or more per night?
A graduate student is interested in how viewing different types of scenes affects working memory. For his study, he selects a random sample of 36 adults. The subjects complete a series of working memory tests before and after walking in an urban setting. Before the walk, the mean score on the test of working memory was 9.1. After the walk, the mean score was 1.4 higher. The graduate student has no presupposed assumptions about how viewing different types of scenes affects working memory, so he formulates the null and alternative hypotheses as: H00 : μDD = 0 H11 : μDD ≠ 0 Assume that the data satisfy all of the required assumptions for a repeated-measures t test. The graduate student calculates the following statistics for his hypothesis test: Mean difference (MDD) 1.4 Estimated population standard deviation of the differences (s) 1.6 Estimated standard error of the mean differences (sMDMD) 0.2667 Degrees of freedom (df) 35 The t statistic 5.25 The critical values of t…
If P(high) = 0.36, P(low) = 0.64, P(favorable | high) = 0.94, and P(unfavorable | low) = 0.63, then what is P(favorable)? 0.0600 0.3384 0.3600 0.5752
Subject:stistic
The results: A. Are, or B. Are not significantly: A. High, or B. Low so there: A. is, or B. is not
Find tests statitic and p-score.
None
Does the type of instruction in a college statistics class (either lecture or self-paced) influence students’ performance, as measured by the number of quizzes successfully completed during the semester? Twelve students were recruited for the study. Students received the lecture instruction or a self-paced instruction. The total number of quizzes completed during teach type of instruction appear below.
R3.25. Timing In August 2011, a Sodahead.com voluntary response poll asked site visitors, "Obama is on Vacation Again: Does He Have the Worst Timing Ever?" 56% of the 629 votes were for "Yes." During the week of the poll, a 5.8 earthquake struck near Washington, D.C., and Hurricane Irene made its way up the East Coast. What types of bias may be present in the results of the poll?
Scenario: A researcher wants to know whether a hard copy of a textbook provides additional benefits over an e-book. She conducts a study where participants are randomly assigned to read a passage either on a piece of paper or on a computer screen. After a distractor task lasting 30 minutes, the participants are tested for their comprehension of the passage with a multiple-choice test containing 10 questions about their passage. Comprehension was scored using percent correct (0 — 100%). The researcher predicts that those randomly assigned to read the passage on a piece of paper will remember significantly more than those who read the passage online. Question: What is the research / alternate hypothesis for this scenario? People who read a passage on a piece of paper will remember more than those who read a passage online. People who read a passage on a piece of paper will not remember more than those who read a passage online. Amount remembered of a passage will vary based…

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