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 or 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 %.

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 or 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 %.

Expert Answer

Want to see the step-by-step answer?

Check out a sample Q&A here.

Want to see this answer and more?

Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes!*

*Response times may vary by subject and question complexity. Median response time is 34 minutes for paid subscribers and may be longer for promotional offers.
Tagged in
Math
Statistics

Other

Related Statistics Q&A

Find answers to questions asked by students like you.

Q: Emissions of nitrogen oxides, which are major constituents of smog, can be modeled using a normal di...

A: From the provided information, Mean (µ) = 1.5 Standard deviation (σ) = 0.4 Let X be a random variabl...

Q: The spending at Target is distributed normally with a mean spending of $47.67 and a standard deviati...

A: Click to see the answer

Q: True or False? Using a 95% confidence interval to describe an odds ratio allows other researchers to...

A: We know that- The null value or the difference value for an odds ratio is 1. If the confidence inter...

Q: A developmental psychologist is examining the development of language skills from age 2 to age 4. Th...

A: Given : Total number of groups, k = 3 with 18 children in each group, Total children = 18×3 = 54 SS ...

Q: In one sentence explain what should you do when α> p-value?

A: Decision rule based on P-value  

Q: ind the probability P(E) if P(E)= 0.28. he probability P(E) is (Simplify your

A: Formula: If A be the event with probability P(A), then P(Ac)=1-P(A)   Given that P(E)=0.28

Q: please work out as you would with a calculator not the book method a ti-83 or ti-84    Coca Cola bot...

A: Given: μ=299 mlσ=3 mln=6

Q: The following data represents the GPA of a sample of 15 students enrolled in a math class. Use techn...

A: Hey, since there are multiple subparts posted, we will answer first three subparts. If you want any ...

Q: If the random variable X is uniformly distributed between 40 and 50, then P(35≤X≤45) is?

A: The density function is given by: f(x) =1/(50-40)        = 1/10

Q: The distance travelled to works by employees at a large company are normally distributed with mean o...

A: Given information Mean = 35 miles Standard deviation = 8 miles

Q: (a) and (b)

A: Let "X" be the average life of a Quick start battery in months. Use excel formula "=NORM.S.DIST(-...

Q: A sample of n=4 scores has a mean of M=75. Find the z-score for this sample: a. If it was obtained f...

A: Plug in all the values in the formula, we get

Q: Over the past few decades, public health officials have examined the link between weight concerns an...

A: Solution: Given information n= 273 Sample size of teenage girls  X= 63 Smoked to stay thin p = 0.30 ...

Q: For a population with a mean of μ= 50 and a standard  deviation of σ= 10, M=55, compute the z-score ...

A: It is given that the mean is 50 and the standard deviation is 10.

Q: In a survey of 3005 adults aged 57 through 85 years, it was found that 81.7% of them used at least o...

A: Solution: a. Let X be the number of subjects used at least one prescription and n be the sample numb...

Q: Consider a binomial experiment with n = 10 and p = 0.1. a. Compute /(0) (to 4 decimals). f(0) %3D b....

A: Click to see the answer

Q: Using the standard Normal distribution tables, what is the area under the standard Normal curve corr...

A: The area under the normal curve corresponding to P(-0.5<z<1.2) is obtained as- P-0.5<z<1...

Q: If the probability of snow on Tuesday is 0.125, then the odds of snow on Tuesday can be given as

A: Click to see the answer

Q: In an effort to cut costs and improve profits, any US companies have been turning to outsourcing. In...

A: Given information Probabilities of outsourcing (p) = 0.54 Total number of companies contacted (n) = ...

Q: Assume that the Poisson distribution applies and that the mean number of hurricanes in a certain are...

A:  

Q: Suppose that a box contains 8 cameras and that 3 of them are defective. A sample of 2 cameras is sel...

A: Click to see the answer

Q: Five males with an​ X-linked genetic disorder have one child each. The random variable x is the numb...

A: Conditions for the discrete probability distribution: The sum of all probability is equal to 1. Each...

Q: A radar unit is used to measure speeds of cars on a highway. The speeds are normally distributed wit...

A: Solution: Let X be the speed of car on a highway. From the given information, X follows normal distr...

Q: In a certain country, total alcoholic beverage sales are reported throughout the year. Sales were re...

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

Q: In a test of the effectiveness of garlic for lowering cholesterol, 48 subjects were treated with gar...

A: The degrees of freedom is, n-1=48-1      =47 The critical-value is obtained by using Excel function ...

Q: Refer Excel Output and answer the following questions.1. State multiple regression equation2. Interp...

A: The coefficients of intercept, Feet and large are given as -3.92,0.03 and 4.22 in the excel output. ...

Q: The following data represents the GPA of a sample of 15 students enrolled in a math class. Use techn...

A: (g) Software procedure: Step-by-step procedure to obtain variance and interquartile range using the ...

Q: A clinical trial tests a method designed to increase the probability of conceiving a girl. In the st...

A: The sample proportion of the sample of size n can be defined as:  Here, X = Total number of success...

Q: Our environment is very sensitive to the amount of ozone in the upper atmosphere. The level of ozone...

A: Click to see the answer

Q: a. Assume H0: μ= 9 and Ha: μ< 9. Is this a left-tailed, right-tailed, or two-tailed test?b. Assum...

A: A left tailed test is conducted when the alternative hypothesis(H1) contains the condition H1<x (...

Q: 1) You test a new drug to reduce blood pressure. A group of 15 patients with high blood pressure rep...

A: Given data, Before After 187 187 120 118 151 147 143 145 160 158...

Q: A local courier service advertises that its average delivery time is less than 6 hours for local del...

A: Given data: Number of courier's deliveries comprised a sample of size n = 16. Sample mean time, x¯=5...

Q: Which of the following individuals is likely to be excluded from a clinical trial?     An indi...

A: In a clinical trial, we need to know the impact of a particular drug on a particular disease. If a p...

Q: QUESTION 39 A small pilot study is conducted to investigate the effect of a nutritional supplem...

A: Consider that µD is the mean difference of initial body weight and weight after 6 weeks. That is, µD...

Q: For the data shown, answer the questions. Round to 2 decimal places. x 24.9 7.9 28.9 13...

A: Click to see the answer

Q: A normal distribution has a mean of  μ = 54 and a standard deviation of  σ =6 What is the probabilit...

A: Mean = 54 Standard deviation =6

Q: Questions 12 to 20 are based on the following problem: Loftus and Palmer study (1974) demonstrated t...

A: Given, Null and alternate hypotheses are stated below: Null hypothesis: H0 : μ1 = μ2 That is, there ...

Q: Please see problem with the solution: after reviewing the information below, assess the appropriaten...

A: The important results that can be seen in the analysis are, 1)R-Sq 2)estimate of  error standard dev...

Q: 75% of all bald eagles survive their first year of life. Give your answers as decimals, not percents...

A: Let the random variable X denote the no.of  bald eagles survive their first year of life and it foll...

Q: ind the indicated z score. The graph depicts the standard normal distribution with mean 0 and standa...

A: Given: The z value corresponding to area 0.9406 is calculated by Excel command NORM.S.INV(0.9406).

Q: You are interested in estimating the the mean age of the citizens living in your community. In order...

A: Given that,   Critical value: Using the z-table, the critical value of z at 3% level of significanc...

Q: what is the minimum pregnancy length that can be in the top 8% of pregnancy given a mean of 265 and ...

A: Given, Pregnancy length having mean 265 and standard deviation 12. Here, We assume, the pregnancy le...

Q: If the 5-number summary is 3, 7, 10, 11, 15, the IQR is 11-7=4.  1.5IQR = 1.5*4 = 6 Lower fence = Q1...

A: The given five number summary is, 3, 7, 10, 11, 15 The first and third quartiles are, Q1=7 and Q3=11...

Q: 38% of adults 10 random selections what is the probability of exactly two making a purchase? More th...

A: Here it is given that- Total number of samples (n) = 10 Sample proportion (p) = 38100=0.38 As n and ...

Q: The number of blueberries in a blueberry muffin baked by EarthHarvest Bakeries can range from 22 to ...

A: Given information Maximum = 40 Minimum = 22

Q: For a normal distribution, find the z-score location that divides the distribution as follows:   S...

A: Given, Standard normal distribution means normal distribution with mean 0 and standard deviation 1.

Q: The overhead reach distances of adult females are normally distributed with a mean of 195 cm and a s...

A: Let X denote the overhead reach distances of adult females and it follows normal distribution with a...

Q: In 2015, the median family income in the United States was $66,650. (Source: U.S. Census Bureau) If ...

A: It is given that the median family income in the United States is $66,650.

Q: Fourteen jurors are randomly selected from a population of 5 million residents. Of these 5 million r...

A: (a) A sample of 14 jurors selected in which 2 are minorities. The proportion of the jury described t...

Q: The distribution of sample means will always be normal if taken from a normal population. True F...

A: Part a: The sampling distribution of the sample means always follows a normal distribution if the un...