In 2011, the U.S. Department of Transportation reported with 95% confidence that the average length of a motor vehicle trip in the United States was 9.72 miles with a margin of error of 0.22 miles.With 95% confidence, the authors of the report are claiming that the true average length of a motor vehicle trip in the United States is between [9.50] and [9.94] miles.The level of confidence for this estimate is [95]%. If \( n = 21 \), \( \bar{x} = 35 \), and \( s = 11 \), construct a confidence interval at an 80% confidence level. Assume the data came from a normally distributed population.Give your answers to one decimal place.\[ \text{ < } \mu \text{ < } \][Input boxes for values]

The confidence interval can be calculated as: C.I = Mean ± Margin fo error = 9.72 ± 0.22 =(9.5,…

length of a motor vehicle trip in the United States was 9.72 miles w miles. With 95% confidence the authors of the report are claiming that th vehicle trip in the United States is between and The lovol of confidence for this octimato i

length of a motor vehicle trip in the United States was 9.72 miles w miles. With 95% confidence the authors of the report are claiming that th vehicle trip in the United States is between and The lovol of confidence for this octimato i

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Suppose X~N(186,19) and Z~N(0,1). If z = 1.24, what is it on an X scale? Express your answer to two decimal places (ex: 123.45).
What would the null and alternative hypotheses be for the average distance a person lives away from a toxic waste site is greater than 10.8 miles?
An author claimed that his annual book sales increased after the year 2000. Past data indicates that the average annual sales for his books are Php 200 M (200 million pesos). The data for the annual sales are normally distributed as shown (in million peso): 2000: 50 2001: 782006: 4002011: 1892016: 83 2002: 3002007: 2902012: 2052017: 132 2003: 2502008: 932013: 3722018: 173 2004: 2002009: 1522014: 4262019: 195 2005: 1852010: 2372015: 252020: 450 Are the author's words true at 98% confidence? In your complete solution, state the null and alternative hypothesis and the complete calculation of test statistic.
A taxi business owner is determining the type of tires for his cars for efficiency the fuel can be increased. Twelve cars were tested using type A tires and asked to travel on a certain route. The same car and driver, then do the same route and the same road conditions with type B tires. Fuel consumption (km/liter) is then recorded as (enclosed). Note: • Use the last digit of your ID (2602296545) in place of a value; • If the last digit is 0 then it is changed to 1; Example: ID 1234567890 → 1 Can we conclude that a car with type A tires has material consumption fuel better than a car with type B tires? Assumed population normally distributed and α=5%. a. Define a hypothesis statement for the case. b. Perform statistical test calculations. c. Give a conclusion from the results of these calculations.