A real estate agent compares the selling prices of homes in two municipalities in southwesternPennsylvania to see if there is a difference. The results of the study are shown. Is thereenough evidence to reject the claim that the average cost of a home in both locations is thesame? Use α=0.01.ScottLigonierX₁ = $93,430*X₂= $98,043*0₂ = $4731σ₁ = $5602n₁ = 35n₂ = 40*Based on information from RealSTATS.Required: Appropriate statistical testAt-test for independent samples, two tailed testBt-test for independent samples, right tailed testсz-test, two tailed testDz-test, right tailed test:

Answered: Image /qna-images/answer/58155d51-fbd7-4f63-8c2a-3f1e9836b307.jpg

Answered: A real estate agent compares 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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In this problem, assume that the distribution of differences is approximately normal. Note: For degrees of freedom d.f. not in the Student's t-table, use the closest d.f. that is smaller. In some situations, this choice of d.f. may increase the P-value by a small amount and therefore produce a slightly more "conservative" answer. In environmental studies, sex ratios are of great importance. Wolf society, packs, and ecology have been studied extensively at different locations in the U.S. and foreign countries. Sex ratios for eight study sites in northern Europe are shown below. Location of Wolf Pack % Males (Winter) % Males (Summer) Finland 60 42 Finland 51 56 Finland 87 71 Lapland 55 48 Lapland 64 55 Russia 50 50 Russia 41 50 Russia 55 45 What is the value of the sample test statistic? (Round your answer to three decimal places.)
Several studies showed that after eating 4 servings of dairy a day, subjects had lowered risk of osteoporosis. A dairy farmer's organization financed this research. Identify what is wrong. Choose the correct answer below. O A. It is not possible to take accurate measurements. B. Since the research is composed of voluntary response samples, there may be key data points missing. C. The data used in the studies is not reliable because it was not measured by the administrator. O D. It is questionable that the sponsor is a dairy farmer's organization because this sponsor can be greatly affected by the conclusion.
The table gives the percent of total households that have married couples for selected years from 1982 and projected to 2050. Complete parts (a) through (c) below. ^ a. Find the quadratic function that best models the data, with x representing the number of years after 1980 and y representing the percent. y=(x²+x+) (Type integers or decimals rounded to three decimal places as needed.) b. Graph the function and the data points on the same axes. Choose the correct graph below. OA. 40 6 17 & + 7 OB. hp f8 * 4+ 8 H 9 O C. Year 1982 1990 2000 2010 f10 O Percent Year 59 2020 56 2030 54 2040 49 2050 Q Q fn OD. f12 Percent 47 46 45 44 + Q Q Next = insert
Suppose that a customer is purchasing a car. He conducts an experiment in which he puts 10 gallons of gas in the car and drives it until it runs out of gas. He conducts this experiment 15 times on each car and records the number of miles driven. Full data set Car 1 216 243 205 242 239 297 295 172 270 251 165 310 265 316 278 Car 2 231 220 223 205 245 257 242 292 248 252 287 255 250 293 251 Median for Car 2 M=___________mi / 10 gal (Type an integer or decimal rounded to one decimal place as needed.) Range for Car 1 R=__________mi / 10 gal (Type an integer or decimal rounded to one decimal place as needed.) Range for Car 2 R=__________mi / 10 gal (Type an integer or decimal rounded to one decimal place as needed.) Sample standard deviation for Car 1 s=_________mi / 10 gal (Type an integer or decimal rounded to one decimal place as needed.) Sample standard deviation…
Refer to the data presented in Exercise 2.86. Note that there were 50% more accidents in the 25 to less than 30 age group than in the 20 to less than 25 age group. Does this suggest that the older group of drivers in this city is more accident- prone than the younger group? What other explanation might account for the difference in accident rates?
A researcher hypothesizes that different colors of cars result in different average speeds. To test this claim, she took a random sample of 20 people who own 4 different colors of colors of cars (n = 20, N = 80, G = 4), and she then tracks their average speed on the highway for a week of driving. The following ANOVA table has some of her results. Please help her answer her research questions by completing the following ANOVA table below and answering the follow-up questions. Be sure to label your answers with the appropriate letter and show all your work! Source Sums of Squares df Mean Square F Effect (between) Error (within) 100.90 ------ Total 170.10 ------- ------ a) What is the Sums of Squares (SS) between (effect)? b) What are the Mean Square (MS) between (effect) and the MS within (error)? c) What are the degrees of freedom (df) between, the df within, and the df total? d) What is the overall F-statistic? e) Based on the…
A real estate agent compares the selling prices of homes in two municipalities in southwestern Pennsylvania to see if there is a difference. The results of the study are shown. Is there enough evidence to reject the claim that the average cost of a home in both locations is the same? Use =α0.10 . Use a TI- 83 Plus or TI- 84 Plus calculator. Scott Ligonier X=1 $95,620 X=2 $97,250 σ=1 $5602 σ=2 $4731 n=135 n=236 State the hypotheses and identify the claim with the correct hypothesis. H0:μ1=μ2 ▼claim H1:μ1≠μ2 ▼not claimThis hypothesis test is a ▼two-tailed test. Find the P-value. Round your answer to at least four decimal places. P-value = ________________________
A random sample of 42 earthquakes that have occurred between January 2015 and September 2017 was selected and for each earthquake the magnitude of the earthquake and the number of people killed was recorded. The data appear in the scatterplot below. 400 350 300 250 200 150 100 50 0 3 -50 4 5 6 7 8 9 10 -100 -150 Magnitude of Earthquake 8 Consider the scatterplot above question 2. Use this scatterplot to describe completely the relationship between the magnitude of the earthquake and the number of people killed. Positive and linear Negative, moderate, linear O Negative, strong, linear Positive, moderate, linear Number of People Killed ---
Suppose you are interested in the population of all college students in the US and that you collect data from all students from FIT. Is the following a parameter or statistic? The proportion of your school's students who are Business Majors a. parameter b. statistic

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