Given that, sample size (n) = 30
b-2) The null and alternative hypotheses are
Degrees of freedom = n - 2 = 30 - 2 = 28
Since, this is right-tailed test, t-critical value at significance level of 0.05 with 28 degrees of freedom is, t* = 1.701
Decision Rule : Reject H0 if t > 1.701
TravelAir.com samples domestic airline flights to explore the relationship between airfare and distance. The service would...
Question 2: How do the average credit scores of people living in various cities in the US differ? The file Credit Score Data of 143 American cities is provided in Canvas. Construct a histogram Create a Five Summary Report Calculate Mean, Variance and Standard Deviation What conclusion can you reach concerning the average credit scores of people living in different American cities? City State Average Credit Score Detroit Mi 743 New York NY 762 Minneapolis MN 787 Hartford CT 774...
The average number of minutes Americans commute to work is 27.7 minutes (Sterling's Best Places, April 13, 2012). The average commute time in minutes for 48 cities are as follows: Click on the datafile logo to reference the data. DATA file Albuquerque Atlanta Austin Baltimore Boston Charlotte Chicago Cincinnati Cleveland Columbus Dallas Denver Detroit El Paso Fresno Indianapolis 23.3 28.3 24.6 32.1 31.7 25.8 38.1 24.9 26.8 23.4 28.5 28.1 29.3 24.4 23.0 24.8 Jacksonville Kansas City Las Vegas Little...
Why is L75 different than the Third Quartile? I can easily find 3rd Quartile using excel. I'm not sure how to find L75 though? Thank you!! The average number of minutes Americans commute to work is 27.7 minutes (Sterling's Best Places, April 13, 2012). The average commute time in minutes for 48 cities are as follows: Click on the datafile logo to reference the data. DATA file Albuquerque 23.3 Jacksonville 26.2 Phoenix 28.3 Atlanta 28.3 Kansas City 23.4 Pittsburgh 25.0...
You collect data on 26 metropolitan areas to analyze average monthly debt payments in terms of income and the unemployment rate. The data are shown in the accompanying table. Use Table 4 Income Metropolitan Area (in $1,000s) Unemployment et Washington, D.C. Seattle Baltimore Boston S1,285 1,135 1,133 1,133 1,104 1,098 1,076 1,045 1,024 1,017 1,011 1,011 989 986 970 957 $103.5 6.3% 82.2 89.5 75.9 93.4 75.5 73.1 68.2 75.1 78.3 84.0 78.3 San Francisco San Diego Sacramento Los Angeles...
How does cellphone service compare between different cities? The data stored in CellService represent the rating of Verizon and AT&T in 22 different cities. (Data extracted from "Best Phones and Service," Consumer Reports, January 2012, p. 28, 37.) At the 0.05 level of significance, is there evidence of a difference in the mean cellphone service rating between Verizon and AT&T? You need to download "CellService” data file. End of document Le L show Queries ILS Prope Prope Refresh File Home...
A study found that consumers are making average monthly debt payments of $983 (Experian.com, November 11, 2010). The data accompanying this exercise show the average debt payments (Debt, in $) for 26 metropolitan areas City Washington, D.C. Seattle Baltimore Boston Denver San Francisco San Diego Sacramento Los Angeles Chicago Philadelphia Minneapolis New York Atlanta Dallas Phoenix Portland Cincinnati Houston Columbus St. Louis Miami Detroit Cleveland Tampa Pittsburgh $1,285 1,135 1,133 1,133 1,104 1,098 1,076 1,045 1,024 1,017 1,011 1,011 989...
CPS 276 DOC02-- Assignment 02 Cost of Living Calculator Your client maintains job search website. As a service on their website, they need an application that compares costs of living between different metropolitan areas. Client will pay $780 for a complete application. Background Information: A person living in an area with a high cost of living will need higher income to maintain the same standard of living as someone living in an area with a low cost of living. For...
Suppose we wish to build a multiple regression model to predict the cost of rent (dollars) in a city based on population (thousands of people), and income (thousands of dollars). Use the alpha level of 0.05. City Monthly Rent ($) 2018 Population (Thousands) 2010 Median Income (Thousands of Dollars) Denver, CO 998 586.158 45.438 Birmingham, AL 711 212.237 301.704 San Diego, CA 1414 1307.402 61.962 Gainesville, FL 741 124.354 28.653 Winston-Salem, NC 750 239.617 41.979 Memphis, TN 819 646.889 36.535...
CITY Police Officers Non Enrolled/Not Grad Families < Poverty Level Serious Crimes Single Female Parent Households Male Arrests Drugs (%) Atlanta, GA 1533 3247 21686 76398 36577 69 Birmingham, AL 724 1891 14075 33895 22391 64 Chicago, IL 12132 27838 116645 * 197631 69 Cleveland, OH 1682 5262 31340 45610 45455 64 Dallas, TX 2857 10702 35085 154929 54434 59 Denver, CO 1361 3312 14417 36558 24215 60 Detroit, MI 3954 13455 71673 127080 113553 58 Fort Lauderdale, FL 463...
Is there a relationship between total team salary and team performance in a sport such as professional basketball? To answer this question we will examine the number of wins and total team payroll in a recent season for all the teams in the National Basketball Association (NBA). The data are in this Excel file. Question 1. Let the x-variable be the team payroll and let the y-variable be the team wins. Find the intercept b0 and slope b1 of the...