The Texas Department of Transportation built hundreds of bridges in 2018. To check the average cost to builda bridge, a random sample of n = 10 bridges was chosen. The mean and standard deviation for the sample are$12,100,000 (12.1 M) and $150,000 (0.15 M), respectively. The department claims that the average bridgebuilding cost is $12,000,000 (12M). Normality is assumed for the cost. Use the sample data to test that thedepartment is correct. Use a = 0.05.a. State the appropriate hypotheses.b. Calculate the value of the test statistic. )c. Determine the rejection region.d. What is your conclusion? Interpret your conclusion.

It is given that Sample mean = 12100000 Standard deviation = 150000 Sample size = 10 Population…

Answered: a. State the appropriate hypotheses. b.…

Math

Statistics

a. State the appropriate hypotheses. b. Calculate the value of the test statistic. c. Determine the rejection region.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.4: Distributions Of Data

Problem 19PFA

See similar textbooks

Related questions

Q: A data set consist of 2,2,3,4,5,5 and 7. Then 20 is added to the data set. The new value will havw…

A: Mean, median, and mode are the three measures of central tendency.

Q: The weights (in ounces) of 3 types of women's shoes are shown below. At 5% level of significance,…

A: Given information: Variable of interest= Shoe type Types of shoes=1.Dress heels 2. Dress flats…

Q: Assume that X and Y are jointly normally distributed. A. Fit a regression line relating both…

A: Given that, X and Y are jointly normally distributed.

Q: By very carefully screening applicants, the Rural Bank of Bataan has been able to limit bad-debt…

A: By very carefully screening applicants, the Rural Bank of Bataan has been able to limit bad-debt…

Q: Samples of two types of life and following da

A: Given, For Type I : sample size (n1) = 8 sample mean (x̄1) = 1234 sample standard deviation (s1) =…

Q: Determine whether or not the distribution is a discrete probability distribution and select the…

Q: Consider a medical practitioner pondering the following dilemma: "If I'm at least 80 percent certain…

A: Given: Probability that Jones has the disease is 60%. Let D denote the event that Jones has the…

Q: card is drawn at random from the pack of 52 cards. (i) Find the Probability that it is an honor…

A: The provided information is There are 52 cards (i) Total number of honor cards {A,J,Q,K}=4 Total…

Q: For a continuous random variable X, the population mean and standard deviation are 90 and 7,…

A: Given that Population mean (μ) = 90 Standard deviation (σ) = 7 Sample size (n) = 81 We know that…

Q: Individuals having Ph.D. degrees in economics tend to be employed by the government, university, or…

A: Solution-: We want to (a) Construct the ANOVA table (b) Test whether salaries differ significantly.…

Q: this investor is investing in the stock market and gains profit b) this investor does not invest in…

A: According to our guidelines, we can answer only three sub parts. So, please repost the rest parts.

Q: STATISTICS AND PROBABILITY (Answer only. NO long explanation needed. Rate will be given) ANSWER IN…

A: Let Z be the random variable from standard normal distribution with mean = 0 and variance = 1

Q: Suppose you have a Simple population regression function describe as follows Y₁ = Bo + B₁X₁ + εi…

A: Solution: From the given information, the regression equation with estimated coefficients is

Q: STATISTICS AND PROBABILITY (Answer only. NO long explanation needed. Rate will be given) Multiple…

A: Here we have to choose correct multiple choice for a given question The concept of sampling…

Q: 6. X-N(40,0²) and P(X>50) = 0.119. Find the value of o. Find the value of (μ. 7. X-N(μ,52) and…

Q: The geyser Old Faithful in Yellowstone National Park alternates periods of eruption, which typically…

A: Solution-: Given: Class width =5 and use 55 as the lower class limit for the first class We want to…

Q: The lengths (in minutes) of a random selection of popular children's animated films are listed…

A: Given that The lengths of random selection of children's animated films are listed below. 90 84…

Q: Each of you are assigned a data set for the regression project (if you are not interested in…

A: Given information: Data assigned: For regression project Condition on which data assigned: Data is…

Q: a. What is the expected weekly demand for the alarm clock radio? b. What is the variance and…

A: The provided information is x (weekly demand) Probability p(x) x*p(x) x2*p(x) 0 0.05 0 0 1…

Q: Select the correct answer. The data set shows the number of hours per week that each student in a…

A: Given, The data set shows the number of hours per week that each student in a class spends studying…

Q: In a random sample of 60 workers the average time taken by them to get to work is 33.8 minutes with…

A: Given that n =60 , x bar = 33.8 ,s.d = 6.1,mu = 32.6 Alpha =0.025

Q: sample of 774 subjects was asked to identify the day of the week that is best for quality family…

A: It is needed to check the claim that if the days of the week selected with a uniform distribution so…

Q: The following table shows the annual family income of the students enrolled in the JRMSU-TC and…

A: Solution-: X=Annual family income (Pesos) (in '000) and Y=General weighted average (GPA) %…

Q: Mr. and Mrs. Brown were married last October 2021 in Ocean view of Nahant in Massachusetts, USA.…

A: Given that, Mr. and Mrs. Brown were planning to have 3 children. If none of the 3 is a boy, they…

Q: 1. Given the data below, the length of life in minutes of 50 black flies subjected to a new spray in…

A: Since you have posted a question with multiple subparts, we will solve first three subparts for you.…

Q: Quarter 4: Performance Task The following are scores of random Grade 10 learners in a 1 Science Math…

A: Question 2 For Science subject : sample size (n) = 7 sample mean (x̄) = Σx/n = 549/7 = 78.43…

Q: PROBLEM 1: Mike performs 2000 significance tests using a significance level 0.10. Under the…

A: "Since you have asked multiple question ,we will solve the first question for you .If you want any…

Q: Construct a relative frequency distribution. Round the answers to two decimal places. Response…

Q: 2. A Grade 11 researcher reported that the average allowance of Senior High School students is P100.…

A: The provided information is µ=100 σ=50 n=40 α=0.01 x¯=120The null and alternative hypothesis…

Q: Suppose a random sample of 100 abservations from a binomial population gives a value of p=0.77 and…

A: The following information has been given: The population proportion is p=0.70. The sample proportion…

Q: What is the probability of this player hiting more than 13 shots (13,14,15,..., or 25)

Q: Data Management - Statistical Anaylsis Per the following graph, explain the reason for every…

A: Given:The bar chart is given and the output related to the data.Find:For the following graph…

Q: What is the area under the normal curve at the right of z = -1.20?

A: We will use Standard Normal table to find the required area.

Q: Suppose a population distribution has a mean of 86.1 and a a random sample of 83 observations from…

A: Given that x=Sample mean=74.6 μ=Population mean=86.1 n=Random sample=83

Q: a. If the sample correlation coefficient between X and Y is positive, then the slope of the…

A: a. If the sample correlation coefficient between X and Y is positive, then the slope of the…

Q: 4. The mean weight of five complete computer stations is 167.2 pounds. The weights of four of the…

A: Formula : x̄=Σx/n

Q: Refer to the accompanying data set and use the 30 screw lengths to construct a frequency…

A: Given : Class width =0.010 Number of lengths =30

Q: The number of concurrent users for some internet service provider has always averaged 3000 with a…

A: Given data: Mean = 3000 Population standard deviation = 500 Sample size = 100 Sample average = 4200…

Q: Records of the past 15 years have shown the average revenue of company A for the month of March to…

A: Introduction: Denote μ1, μ2 as the true average revenues (M pesos) of Companies A and B,…

Q: Find E[X-E[X]]]

Q: A random sample of 400 men from one stage gives the mean pay of Rs. 200 per day with a standard…

Q: The standard deviation of the fuel consumption of a certain car is hypothesized to be equal to 1.72…

A: As per our guidelines we can solve first three sub part of question and rest can be reposted.…

Q: Twenty-nine executives reported the number of telephone calls made during a randomly selected week…

A: Given Max call=58 Min call=3

Q: Data Management - Statistical Anaylsis Per the following graph, explain the reason for every…

A: Given:The given graph is line graph and output related to the categoriwise data.Find:Interprete the…

Q: For each of the following research questions, state the null and research hypotheses in words and…

A: The objective is to state the null and research hypothesis and determine the type of hypothesis test…

Q: A real estate agent has 8 master keys to open several new homes. Only 1 master key will open any…

Q: According to a survey, 63% of the parents are willing to spend extra money for their children's…

A: Population: Population consists of the complete subjects that are included in the study for making…

Q: Males 2-11 Females 2-11 Males 12-17 Females 12-17 Males 18-34 Females 18-34 Males 35-49 Females…

A: Given data, Gender and Age grou[ Relative frequency Males 2-11 0.134 Females 2-11 0.116…

Q: The mean of four numbers is 71.5. If three of the numbers are 58, 76, and 88, what is the value of…

A: From the provided information, The mean of four numbers = 71.5 The three numbers are as follow: 58,…

Q: Question 3 Ghana Rice Company. (GRC) sells rice to selected shops in Accra. GRC uses an automatic…

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

Question

100%

The Texas Department of Transportation built hundreds of bridges in 2018. To check the average cost to build
a bridge, a random sample of n = 10 bridges was chosen. The mean and standard deviation for the sample are
$12,100,000 (12.1 M) and $150,000 (0.15 M), respectively. The department claims that the average bridge
building cost is $12,000,000 (12M). Normality is assumed for the cost. Use the sample data to test that the
department is correct. Use a = 0.05.
a. State the appropriate hypotheses.
b. Calculate the value of the test statistic. )
c. Determine the rejection region.
d. What is your conclusion? Interpret your conclusion.

Expert Solution

This question has been solved!

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

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Step by step

Solved in 4 steps

SEE SOLUTION Check out a sample Q&A here

Recommended textbooks for you

Glencoe Algebra 1, Student Edition, 9780079039897…

Algebra

ISBN:

9780079039897

Author:

Carter

Publisher:

McGraw Hill

Glencoe Algebra 1, Student Edition, 9780079039897…

Algebra

ISBN:

9780079039897

Author:

Carter

Publisher:

McGraw Hill

SEE MORE TEXTBOOKS

GET THE APP

About FAQ Academic Integrity Sitemap Document Sitemap

Contact Bartleby Contact Research (Essays)High School Textbooks Literature Guides Concept Explainers by Subject Essay Help Mobile App

GET THE APP

Privacy

Your CA Privacy Rights

Your NV Privacy Rights

About Ads

Manage My Data

bartleby, a Learneo, Inc. business