Mr. James McWhinney, president of Daniel-James Financial Services, believesthere is a relationship between the number of client contacts and the dollaramount of sales. To document this assertion, Mr. McWhinney gathered thefollowing sample information. The x column indicates the number of clientcontacts last month, and the y column shows the value of sales ($ thousands)last month for each client sampled. (Round the final answers to 2 decimalplaces.)Number ofContacts,X4349442434Sales($thousands),3$75108743132Number ofContacts,21313361818Sales($ thousands),$2425503120a. Determine the 95% confidence interval, in thousands of dollars, for the meanof all sales personnel who make 54 contacts.b. Determine the 95% prediction interval, in thousands of dollars, for aparticular salesperson who makes 54 contacts.

The formula for the confidence interval is,where,denotes the predicted value of yse denotes the…

Answered: Mr. James McWhinney, president of…

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

A local store owner is interested in finding the mean age of her customers. She randomly surveys 82 customers and records their age. Identify the population, sample, variable, type of variable, parameter, and statistic.
Thirteen students entered the business program at Sante Fe College 2 years ago. The following table indicates what each student scored on the high school SAT math exam and their grade-point averages (GPAs) after students were in the Sante Fe program for 2 years. Student A B C D E F G SAT Score 423 375 590 693 608 390 418 GPA 2.93 2.87 3.03 3.48 3.66 2.85 2.18 Student HIJKLM SAT Score 484 734 501 613 712 362 GPA 2.56 3.22 2.01 2.77 3.90 1.58 a) The least - squares regression equation that shows the best relationship between GPA and the SAT score is (round your responses to four decimal places): ModifyingAbove y with caret = enter your response here + enter your response herex where ModifyingAbove y with caret = GPA and x = SAT score. b.) for a student with an SAT score of 390, the expected gpa = (round your response to the neares two decimal places.) c.) for a student with an SAT score of 790 the expected gpa = ( round your response to the neares two decimal places.) the coeffcient of…
show how to answer and put into graphing calculator. Ppool = .126
The value of a certain car when it was brand new with 0 mileage was $17,000 but the value dropped to $4,000 when the car acounulated 80,000 miles shown in the scatter plot below. Car's Mleage and Value S17.000 $2,000 Mileage Based on the data in the scatter plot, at what mileage was the car worth about $12,000? O 20,000 miles O 30,000 miles O 60,000 miles O 80,000 miles
The midterm and final exam grades for a statistics course are provided in the data set below. Jaymes, a student in the class, scored 86 on both exams. Treat the given data sets as samples. Midterm: 80, 78, 85, 82, 79, 79, 78, 86, 80, 84, 78, 84, 80, 84, 81, 78, 81, 82, 78, 84 Final: 81, 88, 68, 69, 69 81, 82, 86, 76, 71, 72, 68, 77, 86, 68, 83, 84, 71, 81, 87 z-score for midterm: 1.857 z-score for final: 1.181 Based on the z-scores calculated above, which of Jaymes's grades is more unusual, the midterm grade or the final exam grade? Select the correct answer below: A. The absolute value of the z-score for the final exam grade is greater than for the midterm grade, so the final exam grade is more unusual. B. The absolute value of the z-score for the midterm exam grade is less than for the final grade, so the midterm grade is more unusual. C. The absolute value of the z-score for the midterm exam grade is greater than for the final grade, so the midterm grade is more…
The data to the right represent the number of chocolate chips per cookie in a random sample of a name brand and a store brand. Complete parts (a) to (c) below.. 10 N (a) Draw side-by-side boxplots for each brand of cookie. Label the boxplots "N" for the name brand and "S" for the store brand. Choose the correct answer below. OA. OB. O C. C N I 10 on he Full data set Name Brand Store Brand 26 23 32 28 33 15 29 22 31 21 17 27 23 35 25 28 19 26 23 22 28 24 24 24 22 28 +
Derrick is preparing to submit his taxes. Over the year, he kept track of certain deductions he is able to claim (all rounded to the nearest dollar). These values are given below. 65,144,97,144,103,98,101,127,58,151 He wants to create a histogram of the data using 4 classes. What values of Xscl, Xmin, and Xmax should he use?
d) Create a 99% Confidence interval for the mean. Provide a sketch of the critical value and calculate the standard error. Only for this part use o = 23.8
Nikko compares the prices of a skateboard at 7 different online stores. His data is shown below. $67.50, $70.00, $102.25, $65.25, $58.75, $62.00, $68.20 13 Given this information, which statement is true? A The mean and median have the same value. B. The mean is the better measure of center than the median. CThe median is a better measure of center than the mean. D. The median is affected more by the outlier than the mean. DELL
I need help with 5 a,b,c
Are cigarettes bad for people? Cigarette smoking involves tar, carbon monoxide, and nicotine (measured in milligrams). The first two are definitely not good for a person's health, and the last ingredient can cause addiction. Use the data in the table above to make a stem-and-leaf display for milligrams of carbon monoxide per cigarette smoked. (Enter NONE in any unused answer blanks.) Are there any outliers? A. Yes, 18.5 may be an outlier. B. No, there are no outliers. C. Yes, 23.5 may be an outlier.
A sales manager recorded the number of sales made by each of the 300 salespeople working athis chain of furniture outlet stores on a Saturday and created the following table.# Sales (bins) Proportion of salespeople in this bin0 – 3 0.053 – 6 0.156 – 9 0.30 9 – 12 0.3512 -15 0.15a. What is the unit of observation in this sample?b. What is the variable collected?c. Draw and label the histogram for this dataset.d. Which is the modal category?e. Calculate the proportion of the salespeople made 9 or more sales.f. Calculate the number of salespeople who made between 0 and 9 sales.

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