The table shown to the right gives the national average pupil-teacher ratio in public schools over...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
The table shown to the right gives the national average pupil-teacher ratio in public schools over selected years. a. Find the equation for the least squares line. Let x correspond to the number of years since 1992 and let y correspond to the average number of pupils per 1 teacher. b. Use the answer from part a to predict the pupil-teacher ratio in 2020. Does this seem realistic? c. Calculate and interpret the correlation coefficient. Year Ratio 1992 1996 2000 2004 17.4 17.7 16.9 16.2 2008 15.8 a. The equation for the least squares line is Y = (Use integers or decimals for any numbers in the equation. Round to four decimal places as needed.) b. Using the answer from part a, the pupil-teacher ratio in 2020 will be (Round to one decimal place as needed.) Does this seem realistic? Click to select your answer(s) c. Calculate and interpret the correlation coefficient. c Select the correct choice below and fill in the answer box to complete your choice. (Type an integer or decimal rounded to four decimal places as needed.) A. The correlation coefficient is which indicates a fairly strong linear correlation B. The correlation coefficient is which indicates that there is no linear correlation Click to select your answer(s) The table shown to the right gives the national average pupil-teacher ratio in public schools over selected years. a. Find the equation for the least squares line. Let x correspond to the number of years since 1992 and let y correspond to the average number of pupils per 1 teacher. b. Use the answer from part a to predict the pupil-teacher ratio in 2020. Does this seem realistic? c. Calculate and interpret the correlation coefficient. Year Ratio 1992 1996 2000 2004 17.4 17.7 16.9 16.2 2008 15.8 a. The equation for the least squares line is Y = (Use integers or decimals for any numbers in the equation. Round to four decimal places as needed.) b. Using the answer from part a, the pupil-teacher ratio in 2020 will be (Round to one decimal place as needed.) Does this seem realistic? Click to select your answer(s) c. Calculate and interpret the correlation coefficient. c Select the correct choice below and fill in the answer box to complete your choice. (Type an integer or decimal rounded to four decimal places as needed.) A. The correlation coefficient is which indicates a fairly strong linear correlation B. The correlation coefficient is which indicates that there is no linear correlation Click to select your answer(s)
Expert Answer:
Related Book For
Posted Date:
Students also viewed these accounting questions
-
Round each number as indicated 1. Round your decimal answer to following Exercise to the nearest hundredth. 2. Round your decimal answer to following Exercise to the nearest hundredth. 3. Round your...
-
The average number of pupils per teacher in each state is shown. Construct a grouped frequency distribution with 6 classes. Draw a histogram, frequency polygon, and ogive. Analyze the distribution....
-
The following table represents admission data of two programs for the given years: 2009/10 2010/11 2011/12 99 136 112 307 309 297 Computer Systems Technician Computer Systems Technology a) What...
-
There are different types of non-probability sampling methods. Below are examples of such methods. You are required to go through them and (for each example); a. Name the Sample Method b. Write a not...
-
How does a contribution margin income statement differ from a traditional in-come statement?
-
An article in the Journal of Applied Electrochemistry (May 2008, Vol. 38(5), pp. 583590) presented a 273 fractional factorial design to perform optimization of polybenzimidazole-based membrane...
-
What does a rate earned on average stockholders' equity show?
-
Refer to the description of Century National Bank at the end of the Review of Chapters 14 on page 125. When Mr. Selig took over as president of Century several years ago, the use of debit cards was...
-
Banana Box Corporation has sales of $4,137,947; income tax of $323,650; the selling, general and administrative expenses of $284,521; depreciation of $317,778; cost of goods sold of $2,593,591; and...
-
Global Green Books Publishing produces customized eBooks for a local college. It has just received an order for a new eBook on Strategic Human Resource Management in a Global Context from a senior...
-
Problem 3 (30 points): A wind tunnel is designed to operate at a Mach number, M-3, in the test section. For the given total pressure and total temperature, calculate: Atz A-10 pts) the ratio of the...
-
When the schedule slips on a project because the work is taking longer than planned, what type of common project change does this represent?
-
Regulations regarding real estate loans. Discuss The Fair Housing Act(FHA). what problem it is attempting to solve, how it is attempting to solve it, and if you think it has worked or will work.
-
we discuss capital budgeting methods and processes. Could you apply the knowledge you learned this week to make better personal or professional decisions? Please elaborate on your answer with...
-
Write the impact of employee issues on individual and organizational performance.
-
Vollmer Manufacturing makes three components for sale to refrigeration companies. The components are processed on two machines: a shaper and a grinder. The times (in minutes) required on each machine...
-
Required information [The following information applies to the questions displayed below Warnerwoods Company uses a periodic inventory system. It entered into the following purchases and sales...
-
Determine the optimal use of Applichem's plant capacity using the Solver in Excel.
-
Children who develop unexpected difficulties with the spoken language are often diagnosed as specifically language impaired (SLI). A study published in the Journal of Speech, Language, and Hearing...
-
Refer to the Museum Management and Curatorship (June 2010) worldwide survey of 30 leading museums of contemporary art, Exercise. Recall that each museum manager was asked to provide the performance...
-
Refer to the National Semiconductor study of manufactured silicon wafer integrated circuit chips, Exercise. Recall that the failure times of the microchips (in hours) were determined at different...
-
What is the purpose of a steering committee?
-
Describe blueprinting.
-
Identify several components of quick-response technology.
Study smarter with the SolutionInn App