Skip to main content

Is there a doctor in the house? A market research firm reported the mean annual earnings of all family practitioners in the United States was $178,258. A random sample of 52 family practitioners in Los Angeles had mean earnings of x$193,130 with a standard deviation of $42,047. Do the data provide sufficient evidence to conclude that the mean salary for family practitioners in Los Angeles is greater than the national average? Use the a 0.10 level of significance and the critical value method with the table. (a) State the appropriate null and alternate hypotheses. (b) Compute the value of the test statistic. ola (c) State a conclusion. Use the a = 0.10 level of significance.

Question
100%
Is there a doctor in the house? A market research firm reported the mean annual earnings of all family practitioners in the
United States was $178,258. A random sample of 52 family practitioners in Los Angeles had mean earnings of x$193,130 with
a standard deviation of $42,047. Do the data provide sufficient evidence to conclude that the mean salary for family practitioners
in Los Angeles is greater than the national average? Use the a 0.10 level of significance and the critical value method with the
table.
(a) State the appropriate null and alternate hypotheses.
(b) Compute the value of the test statistic.
ola
(c) State a conclusion. Use the a
= 0.10 level of significance.
expand button
Transcribed Image Text:Is there a doctor in the house? A market research firm reported the mean annual earnings of all family practitioners in the United States was $178,258. A random sample of 52 family practitioners in Los Angeles had mean earnings of x$193,130 with a standard deviation of $42,047. Do the data provide sufficient evidence to conclude that the mean salary for family practitioners in Los Angeles is greater than the national average? Use the a 0.10 level of significance and the critical value method with the table. (a) State the appropriate null and alternate hypotheses. (b) Compute the value of the test statistic. ola (c) State a conclusion. Use the a = 0.10 level of significance.
Expert Solution

Want to see the full answer?

Check out a sample Q&A here
Blurred answer
Students who’ve seen this question also like:
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
Not helpful? See similar books
MATLAB: An Introduction with Applications
marketing sidebar icon
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.

Related Statistics Q&A

Find answers to questions asked by students like you.

Q: Company-owned Kentucky Fried Chicken restaurants in the United States have been reported as…

A: Click to see the answer

Q: A local supermarket spent $250,000 remodeling. Prior to remodeling, the average daily receipts were…

A: From the provided information, Sample size (n) = 18 Sample mean (x̅) = $59800 Standard deviation (s)…

Q: In the past, patrons of a cinema complex have spent an average of $5.25 for popcorn and other…

A: Click to see the answer

Q: In the past, patrons of a cinema complex have spent an average of $5.25 for popcorn and other…

A: Given Information: In the past, patrons of a cinema complex have spent an average of $5.25 for…

Q: In the past, patrons of a cinema complex have spent an average of $5.25 for popcorn and other…

A: Click to see the answer

Q: In the past, patrons of a cinema complex have spent an average of $5.25 for popcorn and other…

A: From the provided information, Sample size (n) = 18 Sample mean (x̅) = 4.46 Population standard…

Q: In the past, patrons of a cinema complex have spent an average of $5.25 for popcorn and other…

A: Given Information : In the past, patrons of a cinema complex have spent an average of $5.25 for…

Q: In the past, patrons of a cinema complex have spent an average of $5.25 for popcorn and other…

A: Click to see the answer

Q: In the past, patrons of a cinema complex have spent an average of $5.25 for popcorn and other…

A: Given Population mean, μ=5.25 Population sd, σ=1.76 Sample size, n=18 Sample mean, X=4.46 α=0.05

Q: A dairy farm uses the somatic cell count (SCC) report on the milk it provides to a processor as one…

A: Claim : The mean SCC of all milk produced at the dairy exceeds that in the previous report, 210,250…

Q: A survey recently reported that the mean national annual expenditure for inpatient and outpatient…

A: Click to see the answer

Q: According to the National Association of Home Builders, the average cost of building a home in the…

A: Null hypothesis: Null hypothesis is the statement about parameter of population. Alternative…

Q: Is there a doctor in the house? A market research firm reported the mean annual earnings of all…

A: Given

Q: According to a major credit card company, the mean outstanding credit card debt of college…

A: Given,   Population mean = $2,534 Population standard deviation = $33   The objective is to find…

Q: The average pre-school cost for tuition fees last year was P17,250. The following year, 20…

A: Click to see the answer

Q: The average pre-school cost for tuition fees last year was P17,250. The following year, 20…

A: Given that  Population mean = 17250 Sample mean = 16150 Sample size (n) = 20  Alpha = 0.10. By using…

Q: A tire company claims that its top selling brand averages at least 50,000 miles before it needs to…

A: Click to see the answer

Q: According to the National Association of builders, the average cost of building a standard warehouse…

A: From the given information, Sample mean (M) = $122.57 Sample size (n) =36 Standard deviation (s) =…

Q: The mean annual tuition and fees for a sample of 15 private colleges was $41,200 with a standard…

A: Given: n=15x¯=41200s=5300μ=38000α=0.05 The test hypothesis are, H0: μ=38000H1: μ≠38000. This is a…

Q: A survey recently reported that the mean national annual expenditure for inpatient and outpatient…

A: To test:H0:μ=5423H1:μ>5423

Q: A dairy farm uses the somatic cell count (SCC) report on the milk it provides to a processor as one…

A: Denote μ as the population mean SCC of all milk produced.

Q: A random sample of 50 public school teachers in Georgia had a mean annual salary of $48,300. Assume…

A: The hypotheses for the test is given below.Null hypothesis:H0: µ = $50,000Alternative hypothesis:H1:…

Q: To compare the battery life of Duracell versus Energizer batteries, a sample of 140 Duracell…

A: Given: n1 = 140 X1 = 345 S1 = 95 n2 = 125 X2 = 280 S2 = 86 α = 0.01 Formula Used: Test-statistic t =…

Q: In a certain city, the average 20- to 29-year old man is 72.5 inches tall, with a standard deviation…

A: Click to see the answer

Q: The credit card balances on 1,000 accounts at the Jefferson Valley Bank have a mean of $760 and a…

A: mean = 760 s = 120 n = 1000

Q: A cell phone company offers contract phones and non-contract phones.  In a sample of 40 contract…

A: Given that, In a sample of 40 contract subscribers, the mean yearly income was found to be $57,000…

Q: In a certain city, the average 20- to 29-year old man is 69.6 inches tall, with a standard deviation…

A: Click to see the answer

Q: dent at a four-year college claims that the mean enrollment at four-year colleges is higher than a…

A: 35 two-year college is surveyed, the main enrollment was 5,068 with a standard deviation of 4,777.…

Q: A medical researcher is interested in the prenatal care received by pregnant women in inner cities.…

A: A sample of 20 randomly selected women with children on the streets of Baltimore and the average…

Q: A medical researcher is interested in the prenatal care received by pregnant women in inner cities.…

A: We have given that  Sample size n=20 , sample mean =4  s=1 , 95%confidence.

Q: The average American consumes 98 liters of alcohol per year. Does the average college student…

A: Click to see the answer

Q: Do people who exercise regularly have a cholesterol level less than the recommended level of 140? A…

A: The summary of statistics is,

Q: According to official data, the average annual expenditure on dental care in Kingston, Jamaica is at…

A: Givensample size(n)=125sample Mean(x)=55000standard deviation(s)=10500α=0.05

Q: The average cost of tuition plus room and board for a small private liberal arts college is reported…

A: State the hypotheses.

Q: A phone manufacturer wants to compete in the touch screen phone market. Management understands that…

A: It is given that:n1=120, x1=5×60minutes=300s1=30n2=100x2=8×60 minutes=480s2=55   Since, the sample…

Q: A national newspaper claims that mean enrollment at four-year colleges is higher than at two-year…

A: Click to see the answer

Q: A travel analyst claims that the mean price of a round trip flight from New York City to Los Angeles…

A: Solution:

Q: The average farm size in the United States is 444 acres. A random sample of 40 farms in Oregon…

A: Null hypothesis: H0: μ = 444. Alternative hypothesis: HA : μ ≠ 444 Central Limit Theorem for mean:…

Q: A telecommunications company claims that households receive an average of 40 telephone calls per…

A: From the given information, μ=40 calls σ=5 callsn=35x=36α=0.10

Q: A manufacturer claims that the mean weight of its ice cream cartons is 10 ounces with a standard…

A: Click to see the answer

Q: The mean serum-creatinine level measured in 12 patients 24 hours after they received a newly…

A: State the hypotheses. That is, there is no evidence to conclude that the mean serum-creatinine…

Q: If heights of 3rd graders follow a normal distribution with a mean of 52 inches and a standard…

A: Given, Let X represent the heights of 3rd graders. Mean, μ = 52 Standard deviation, σ = 2.5 X ~…

Q: The amount of pretzels dispensed into a 24-ounce bag by the dispensing machine has been identified…

A: Given information- Population mean, µ = 24.5 ounces Population standard deviation, σ = 0.2 ounces…

Q: A tire company claims that its top selling brand averages at least 50,000 miles before it needs to…

A: Solution

Q: The physical plant at the main campus of a large state university recieves daily requests to fix…

A: We have given that The number of daily maintenance requests recieved is bell-shaped with a mean of…

Q: A recently admitted class of graduate students at a large state university has a mean GRE verbal…

A: We have given that  Mean=650  Standard deviation=50 X=490

Q: An auditor, pressed for time and on a low budget, is concerned with account errors on customer…

A: The null and alternative hypotheses are;

Q: A random sample of 50 veterinarian school applicants at a university has a sample mean score of 28…

A: Given information: Sample size n=50 Sample mean X¯=28 Sample  standard deviation s=1.8 Hypothesized…

Q: A random sample of 50 veterinarian school applicants at a university has a sample mean score of 28…

A: Click to see the answer

Q: A survey of 10 fast food restaurants noted the number of calories in a mid sized hamburger. The…

A: Click to see the answer

Knowledge Booster
Recommended textbooks for you
  • MATLAB: An Introduction with Applications
    Statistics
    ISBN:9781119256830
    Author:Amos Gilat
    Publisher:John Wiley & Sons Inc
    Probability and Statistics for Engineering and th...
    Statistics
    ISBN:9781305251809
    Author:Jay L. Devore
    Publisher:Cengage Learning
    Statistics for The Behavioral Sciences (MindTap C...
    Statistics
    ISBN:9781305504912
    Author:Frederick J Gravetter, Larry B. Wallnau
    Publisher:Cengage Learning
  • Elementary Statistics: Picturing the World (7th E...
    Statistics
    ISBN:9780134683416
    Author:Ron Larson, Betsy Farber
    Publisher:PEARSON
    The Basic Practice of Statistics
    Statistics
    ISBN:9781319042578
    Author:David S. Moore, William I. Notz, Michael A. Fligner
    Publisher:W. H. Freeman
    Introduction to the Practice of Statistics
    Statistics
    ISBN:9781319013387
    Author:David S. Moore, George P. McCabe, Bruce A. Craig
    Publisher:W. H. Freeman
  • MATLAB: An Introduction with Applications
    Statistics
    ISBN:9781119256830
    Author:Amos Gilat
    Publisher:John Wiley & Sons Inc
    Probability and Statistics for Engineering and th...
    Statistics
    ISBN:9781305251809
    Author:Jay L. Devore
    Publisher:Cengage Learning
    Statistics for The Behavioral Sciences (MindTap C...
    Statistics
    ISBN:9781305504912
    Author:Frederick J Gravetter, Larry B. Wallnau
    Publisher:Cengage Learning
    Elementary Statistics: Picturing the World (7th E...
    Statistics
    ISBN:9780134683416
    Author:Ron Larson, Betsy Farber
    Publisher:PEARSON
    The Basic Practice of Statistics
    Statistics
    ISBN:9781319042578
    Author:David S. Moore, William I. Notz, Michael A. Fligner
    Publisher:W. H. Freeman
    Introduction to the Practice of Statistics
    Statistics
    ISBN:9781319013387
    Author:David S. Moore, George P. McCabe, Bruce A. Craig
    Publisher:W. H. Freeman