Raquel runs a BBQ restaurant. She would like to know if the mean number of children that choosebeef ribs daily is different from the average number of children that choose pork ribs daily inanticipation of creating a new children's menu. She asks her servers to make a special note everytime they take an order from a child and record it in the log book. After 15 days, she records thatan average of 39 children every day order beef ribs and 43 order pork ribs. The standarddeviations for those 15 days are 3.1 for beef ribs and 2.9 for pork ribs, respectively.(a) Create a 95% confidence interval for the true difference in mean number of children that orderbeef and pork ribs recorded as (beef - pork).(b) Using the t-table, determine the test statistic and p-value for testing if there is a difference inthe mean number of children that order beef and pork ribs daily. You do not need to perform acomplete test.

Given: Sample size (n) = 15 Sample meanx¯=39y¯=43Sample standard deviationsx=3.1sy=2.9 Let X and Y…

Answered: aquel runs a BBQ restaurant. She would…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

One of the basketball coaches at Cypress College wanted to see if Cypress College's Strength & Exercise class was increasing the weight that a player could bench press. The basketball coach randomly selected some of his players and determined how much they could bench press before taking the class. Then after completing the class, he again determined the weight that they could now bench press. The data for these players is given in the table below. Test whether the Strength and Exercise class is increasing the amount of weight that the players can bench press at the a=0.05 level of significance. Player Player 1 Player 2 Player 3 Player 4 Pounds Lifted Before 205 241 338 368 [ Select] ANOVA 2-SampFTest 252 330 360 2-SampTTest X^2-Test 2-PropZTest T-Test [ Select ] P-Value [ Select] Conclusion
PART C. Records in the country show that six out of 10 convicted offenders were reconvicted 10 years after being released. Officer Chimmy, the head of a rehabilitation program at a local prison, wishes to determine if its program has been successful compared to the records in the country. He then observed a random sample of 68 convicted offenders who participated in the local ultimatearm from prison's rehabilitation program and were later released. The proportion out of these numbers who Icon made by www.flaticon.com were reconvicted 10 years after being released was recorded. Formulate the appropriate null and alternative hypotheses in symbols and words. Но: ;The of the convicted offenders who participated in the local prison's rehabilitation program who were reconvicted 10 years after being released is На: ;The of the convicted offenders who participated in the local prison's rehabilitation program who were reconvicted 10 years after being released is
You are an education researcher interested in studying if race or ethnicity affects the severity of punishment children receive. Through open records, you are able to collect from several high schools the length of suspensions given to kids for fighting along with the race/ethnicity of the child. The state of Texas divides school children into one of 7 race/ethnicity groups: African American, American Indian, Asian, Hispanic, Pacific Islander, White, or Multiracial. You want to compare the average length of suspension among these 7 groups. Which statistical test would be best to determine if there is a significant difference in the severity of punishment among the different groups? one-sample t-test related samples t-test independent samples t-test ANOVA
PLEASE SHOW COMPLETE SOLUTION.
A researcher is curious to see if the amount of time spent on social media influences how often friends meet in person to socialize. After their sample is selected the researcher asks the subjects on average how much time they spend on social media each day and then asks their subjects to keep track of how many times they meet in person with their friends to socialize and report back at the end of the month. What type of study design is this? The research obtains 100 participates who met with their friends in person at least 15 times in the last month to socialize and 100 participates who met with their friends in persons less than 15 times in the last month to socialize. Then the researcher asks the participants on average how many hours per day did they spend on social media during the month before. What type of study design is this? Options for both questions: Cohort, case-control, cross-sectional, clinical trial
We want to investigate the average study time per day of School students. The official number of School students is 20,000. We have collected data using the actual contact number of School students. It contains individual-level information on the study hours per day. The number of observations in a data set is 20,000. The same person has not been collected more than once in this data. According to this data, the average study time per day of School students is 3 hours and 20 minutes. 1.what's unique about this data 2.how do you perform your own hypothesis test using this data?
The council leaders of a small town would like to determine the average number of people living in each household. To accomplish this, they send a questionnaire to each residence listed in the town address records, asking the head of the household to record the number of people living in the dwelling. They follow this up with visits to those households that have not responded to the questionnaire until the data collection process is complete. Which of the following is the best description of the method for data collection used by the council leaders? (A) A convenience sample (B) A simple random sample (C) A stratified random sample (D) A cluster random sample (E) A census
In a statistics activity, students are asked to spin a penny and a dime and determine the proportion of times that each lands with tails up. The students believe that since a dime is lighter, it will have a lower proportion of times landing tails up compared with the penny. The students are instructed to spin the penny and the dime 30 times and record the number of times each lands tails up. For one student, the penny lands tails side up 18 times, and the dime lands tails side up 20 times. Let pp = the true proportion of times a dime will land tails up and pp = the true proportion of times a penny will land tails up. The P-value for this significance test is 0.296. Which of the following is the correct conclusion for this test of the hypotheses H Pp-Pp=0 and H, Po-Pp 0.05. There is sufficient evidence that the true proportion of times a dime will land tails up is significantly less than the penny. O The student should reject the null hypothesis since 0.296 > 0.05. There is insufficient…
Suppose Laura, a facilities manager at a health and wellness company, wants to estimate the difference in the average amount of time that men and women spend at the company's fitness centers each week. Laura randomly selects 15 adult male fitness center members from the membership database and then selects 15 adult female members from the database. Laura gathers data from the past month containing logged time at the fitness center for these members. She plans to use the data to estimate the difference in the time men and women spend per week at the fitness center. The sample statistics are summarized in the table. Population Populationdescription Population mean(unknown) Samplesize Sample mean(min) Sample standarddeviation (min) 11 male μ1 n=15 x¯1=137.7 s=51.7 22 female μ2 n=15 x¯2=114.6 s=34.2 df=24.283 The population standard deviations are unknown and unlikely to be equal, based on the sample data. Laura plans to use the two-sample ?-t-procedures to estimate the…
Could you please answer number 3 and number 4?
Approval 2008. Of all the post–World War II presidents,Richard Nixon had the highest disapproval rating near theend of his presidency. His disapproval rating peaked at 66% in July 1974, just before he resigned. This percent-age has been considered by some pundits as a high water mark for presidential disapproval. However, in April 2008,George W. Bush’s disapproval rating peaked at 69%,according to a Gallup poll of 1016 voters. Pundits starteddiscussing whether his rating was discernibly worse thanthe previous high water mark of 66%. What do you think?
All Greens is a franchise store that sells house plants and lawn and garden supplies. Although All Greens is a franchise, each store is owned and managed by private individuals. Some friends have asked you to go into business with them to open a new All Greens store in the suburbs of San Diego. The national franchise headquarters sent you the following information at your request. These data are about 27 All Greens stores in California. Each of the 27 stores has been doing very well, and you would like to use the information to help set up your own new store. The variables for which we have data are detailed below. x1 = annual net sales, in thousands of dollarsx2 = number of square feet of floor display in store, in thousands of square feetx3 = value of store inventory, in thousands of dollarsx4 = amount spent on local advertising, in thousands of dollarsx5 = size of sales district, in thousands of familiesx6 = number of competing or similar stores in sales district A sales district…

SEE MORE QUESTIONS

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

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

SEE MORE TEXTBOOKS