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 and miles. The level of confidence for this estimate is %. Submit Question

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 and miles. The level of confidence for this estimate is %. Submit Question

Name: In 2011 the U.S. Department of Transportation reported with 95% confi
Uploaded: 2024-03-20T07:07:00.000Z
Channel: Bartleby
Description: In 2011 the U.S. Department of Transportation reported with 95% confidence that the average length of amotor 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 clai

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Related questions

Q: The distribution of the lengths of a commercially caught fish is bell-shaped with mean 24 cm and…

A: the PDF of normal distribution is = 1/σ * √2π * e ^ -(x-u)^2/ 2σ^2standard normal distribution is a…

Q: State the variable. What is the z score for 52 cm? What is the z-score for 74 cm? What is the Z…

A: Given that, Mean (μ)=49.9 sd (σ) = 3.74

Q: people think that the "normal" adult body temperature is 98.6°F. In a more recent study, researchers…

Q: A Seattle consumer agency believes that plumbers’ rates are too high and wants to estimate the mean…

A: GivenConfidence Interval(c)=95%Margin of Error(E)=3%=0.03Let…

Q: THE INFORMATION BELOW REFERS TO THIS AND THE NEXT QUESTION. The heights of adult women in the…

A: A critical value is a point on the test distribution that is compared to the test statistic to…

Q: In 2011 the U.S. Department of Transportation reported with 95% confidence that the average length…

A: We have to find confidence Iinterval

Q: Will you provide an example of Standard Deviation math problem and solution?

A: Standard deviation:The standard deviation indicates by how much each observation differs from a…

Q: A group of students estimated the length of one minute without reference to a watch or clock, and…

Q: Given that the mean of a set of data is 40 and the standard deviation is 2, what is the coefficient…

A: Given,standard deviation(σ)=2mean(μ)=40

Q: When you have your blood pressure taken, the larger number is the systolic blood pressure.…

A: We need to construct the 95%95\% confidence interval for the difference between the population…

Q: 2. Hypothesis testing problem. The mean age when smokers first start is 13 years old with a…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub- parts for…

Q: If you chose to compute a mean for a variable, which measure of variability would you most likely…

Q: Fiting a straight line to a set of data yields the following prediction line. Complete (a) through…

A: Given Y^i=17-0.7×Xi

Q: The average and standard deviation for ACT scores are 20 and 3 respectively. average and standard…

Q: An engineer wishes to determine the width of a particular electronic component. If she knows that…

Q: A standardized test has a pop. mean of 152 and a standard deviation of 16. Molly scores at the 91st…

Q: An engineer wishes to determine the width of a particular electronic component. If she knows that…

A: σ=3.7,E=0.3,C.I=90%

Q: An engineer wishes to determine the width of a particular electronic component. If she knows that…

A: Assume that μ is the population mean width of a particular electronic component.

Q: A confidence interval for the population mean was constructed and found to be (34.6, 66.6). What is…

A: The estimated statistic from the samples, which is assumed to be representative of the population…

Q: Convert the estimate and your conﬁdence interval to Percents. Discuss reasons the estimate might be…

A: We have to convert the estimate and confidence interval into the percentage.

Q: b. At 99% confidence, what is the margin of error? c. Develop a 99% confidence interval for the…

A: USA Today reports that the average expenditure on Valentine's Day was expected to be $100.89. Do…

Q: ccording to this data, what is the "normal range" for creatinine levels? That is, in what range will…

Q: In a frequency distribution the coefficient of skewness based on quartiles is 0.6. If the sum of the…

Q: Suppose a government department would like to investigate the relationship between the cost of…

A: The data shows the a random sample of 10 homes heating cost and square footage.

Q: Condé Nast Traveler conducts an annual survey in which readers rate their favorite cruise ship. All…

A: Sample Size Sample mean Population S.D Sample 1 n₁ = 37 x̅₁ = 85.36 σ₁ = 4.55 Sample 2 n₂ = 44…

Q: An engineer wishes to determine the width of a particular electronic component. If she knows that…

A: From the provided information, Population standard deviation (σ) = 3.6 mm Confidence level = 90%…

Q: Assignment 2 Answer the following using the 4-step solution, then please send as an attachment. 1.…

Q: A quantitative data set has size 50. At least how many observations lie within three standard…

A: The size of the data set is 50.

Q: B. Analyze and solve the following problem. The researcher wants to determine wheter the mean…

A: Given that The researcher wants to determine wheter the mean lifespan of his specimen of 28 in…

Q: A study analyzed the sustainability behaviors of CPA corporations. The level of support for…

A: Let μ be the population's mean level of support for sustainability. Given that, Population mean (μ)…

Q: Note: Please solve within 35 minutes. The proper explanation is a must. Saide scored 85 on a…

A: Given that physics test had mean=65 and a standard deviation=S.D.=3. The distribution is normal.

Concept explainers

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.

Topic Video

Question

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
and
miles.
The level of confidence for this estimate is
%.
Submit Question
here to search
FI
F2
F3
F4
F5
F10
F6
F7
F8
F9
F1
%23
%
&
2
4.
8
Q
W
T
Y
U
A
G
JK
C
V
M
V
エ
LL

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

$Hypothesis Tests and Confidence Intervals for Proportions$

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, probability and related others by exploring similar questions and additional content below.

Similar questions

Answer with solution please thank you
Please answer Part b,c,d correctly d) Explain in context what your interval means. Select the correct choice below. A. 95% of all bags of tortilla chips will have a mean weight that falls within the interval. B. 95% of the weights of the bags of tortilla chips will be contained in the interval. C. The interval contains the true mean weight of the contents of a bag of tortilla chips 95% of the time D. We are 95% confident that the interval contains the true mean weight of the contents of a bag of tortilla chips
Please answer the following parts d, e and f only, as a, b and c were alreday provided. Also, please show using graphing calculator and not Excel. Thanks. Adult IQ scores can be modeled using a normal model with mean 100 and a standadrd deviation of 15. a. Find the proportion of IQ scores that are less than 115. b. Find the proportion of IQ scores that are greater than 131.5. c. Find the proportion of IQ scores between 90 and 110. d. Find the proportion of IQ scores that are betewwn 110 and 120. e. Find the IQ score above which there are 10% of the scores. f. Find the IQ score below which there are 20% of the scores.
Please solve a, b, and c. Note: Please explain and show steps for solutions especially for part c.
Please explain. In a survey, 11 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $41 and standard deviation of $4. Find the margin of error at a 90% confidence level.Give your answer to two decimal places.
Please answer the following: You can use the graphing calculator-just explain how to input into calculator. A tire manufacturer beleives that the tread life of its snow tires can be described by a normal model with a mean of 32,000 miles and standard deviation of 2,500 miles. a) If you buy a set of these tires, would it be reasonable for you to hope that they last 40,000 miles? Explain. b) What proportion of these tires can be expected to last less than 30,000 miles? c) What proportion of these tires can be expected to last between 30,000 and 35,000 miles? d) Estimate the IQR of the tread lives. e) In planning a marketing strategy, a local tire dealer wants to offer a refund to any customer whose tires fail to last a certain number of miles. However, the dealer does not want to take too big a risk. If the dealer is willing to give refunds to no more than 1 of every 25 customers, for what mileage can he be guaranteed these tires to last?
When a researcher changes their data analyses to get the p-value they desire, that is known as a. HARKing b. p-hacking c. multiple comparisons d. a Type II error
Please answer the following question by stating conditions and test required. Please show how to answer using graphing calculator if possible.
Please graph the answer (Solve p =, z =, etc)
Please look at the picture and provide full details answer
Please review Section 9.2. A marketing researcher wants to estimate the mean amount spent per year ($) on a web site by membership member shoppers. Suppose a random sample of 100 membership member shoppers who recently made a purchase on the web site yielded a mean amount spent of $60 and a standard deviation of $56. Use technology to solve and include files and/or screen shots. Is there evidence that the population mean amount spent per year on the web site by membership member shoppers is different from $52? a =0.05 H:µ= 52 H : µ # 52 Identify the critical value(s): (Round to two decimal places as needed.) Determine the test statistic: (Round to two decimal places as needed.) State the conclusion:
Fitting a straight line to a set of data yields the following prediction line. Complete (a) through (c) below. Yi=2+8Xi a. Interpret the meaning of the Y-intercept, b0. Choose the correct answer below. A. The Y-intercept, b0=8, implies that when the value of X is 0, the mean value of Y is 8. B. The Y-intercept, b0=2, implies that for each increase of 1 unit in X, the value of Y is expected to increase by 2 units. C. The Y-intercept, b0=2, implies that the average value of Y is 2. D. The Y-intercept, b0=2, implies that when the value of X is 0, the mean value of Y is 2. b. Interpret the meaning of the slope, b1. Choose the correct answer below. A. The slope, b1=8, implies that for each increase of 1 unit in X, the value of Y is expected to increase by 8 units. B. The slope, b1=8, implies that for each increase of 1 unit in X, the value of Y is expected to decrease by 8 units. C. The slope, b1=8,…