Data on the fuel economy of several 2010 model vehicles are given in the accompanying table. Complete parts (a) and(b) below.a) Find and interpret a 95% confidence interval for the gas mileage of 2010 vehicles. Select the correct choice belowand fill in the answer boxes within your choice.(Round to two decimal places as needed. Use ascending order.)OA. 95% of all cars like the ones in the sample have gas mileages betweenOB. The true mean gas mileage for cars like the ones in the sample is betweentime.mpg andmpg andmpg.mpg 95% of theC. One is 95% confident that the true mean gas mileage for cars like the ones in the sample is between mpgandmpg.OD. One is 95% confident that the gas mileage of a randomly selected car like the ones in the sample is betweenmpg and mpg. ? StatCrunchMyStatLabStatCrunchRow12345678910111213141516171Data SetAppletsCar234LO567891011121314157EditmpgY342922402538203734202229213424Datavar3Stat

Answered: Image /qna-images/answer/176d7ff4-bd30-4fe6-9115-85e8ee9debc1.jpg

Answered: Data on the fuel economy of several…

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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The Bureau of Labor Statistics reports that the official unemployment rate for Black people was 10.4% and 4.7% for White people in February 2015. Select all correct answers for this question. O The samples of white and black people are independent. The explanatory variable is the unemployment rate. The response variable is the unemployment rate. The response variable is race.
(in hours): 7, 6, 7, 8.5, 8, 9, 6.5 a. Find the mean, median, mode and standard deviation for their hours of sleep. b. Create a 99% confidence interval for the mean amount of hours they slept.
Tina catches a 14-pound bass. She does not know the population mean or standard deviation. So she takes a sample of five friends and they say the last bass they caught was 9, 12, 13, 10, and 10 pounds. Find the t and calculate a 95% (α = .05) confidence interval.
When forming a confidence interval for matched-pair data the point estimate is the Select one: O A. standard deviation of the differences. OB. differences of the standard deviations. O C. mean of the differences. O D. difference of the means.
Use the sample data and confidence level given below to complete parts (a) through (d). A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, n= 1004 and x = 575 who said "yes." Use a 90% confidence level. E Click the icon to view a table of z scores. .... a) Find the best point estimate of the population proportion p. (Round to three decimal places as needed.)
do the last one please
The accompanying table shows data for the weights of backpacks for men and women. Assume that the data are from random samples and the distributions are Normal. Complete parts (a) and (b) below. E Click the icon to view the data table. a. Find a 95% confidence interval for the difference between means HFemale - HMale state whether it captures 0, and explain what that shows about the mean. The 95% confidence interval is ( D (Round to two decimal places as needed. Use ascending order.) Backpack weights Female Male 10 10 12 8 9. 7 5 10 7 20 3 11 8 14 13 11 14 6 7 22 11 12 15 10 17 22 10 7 25 11 7 15 11 11 4 16 13 20 21 15 10 9. 16 10 15 13 10 10 17 12 11 38 6. 6. 7 19 12 13 20 8 14 15 18 19 10 16 16 13 18 12 14 13 13 15 14 14 7 7 14 13 27 11
Researchers studied the mean egg length (in millimeters) for a bird population. After taking a random sample of eggs, they obtained a 95% confidence interval of (45,60). What is the value of the margin of error? Choose the correct answer below. A. 15 mm B. 52.5 mm O c. 7.5 mm O D. 1.96
Use the histogram below to build a 95% confidence interval of the average heart rate of a person. Put your two numbers below in the spaces provided. Round to one decimal: ex: 98.2 The histogram visualizes the results of doing one thousand studies just like above. We are 95% confident that the average heart rate of a person is between ____and_____ All information needed to answer this problem is present. There is no missing information to this question.
OT J0 For what type of variable does it make sense to construct a confidence interval about a population proportion? Choose the correct answer below. O.A. Qualitative with 3 or more possible outcomes OB. Discrete C. Continuous D. Qualitative with 2 possible outcomes E. Quantitative O F. Any variable Click to select your answer. O O O O

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