The manager of a folder factory recorded the number of folders produced by the factory (inthousands) and the production costs (in thousand Euros), for six consecutive monthsFolders produced,(thousands)Production costs, C(thousand Euros)January February1535March22April30(b) Write down, for this set of data(i) the mean number of folders produced, x ;(ii) the mean production cost, C.72May2868June2155(a) Draw a scatter diagram for this data. Use a scale of 2cm for 5000 folders on the horizontaxis and 2 cm for 10 000 Euros on the vertical axis.(c) Label the point M(x, C) on the scatter diagram.a) Calculate r by hand(10)(d) Use your graphie display calculator to find the Pearson's product-moment correlationcoefficient, r.(e) State a reason why the regression line C on x is appropriate to model the relationshipbetween these variables.* Line of best fit.(f) Use your calculator to find the equation of the regression line C on x.(g) Draw the regression line C on x on the scatter diagram.Every month the factory sells all the folders produced. Each folder is sold for 2.99 Euros.(h) Use the equation of the regression line to estimate the least number of folders that thefactory needs to sell in a month to exceed its production cost for that month.

Data is given for production cost according to produced folders for months January to June. We have…

The manager of a folder factory recorded the number of folders produced by the factory (in thousands) and the production costs (in thousand Euros), for six consecutive months Folders produced, (thousands) Production costs, C (thousand Euros) January February March 15 10 35 40 22 60 April (b) Write down, for this set of data (i) the mean number of folders produced, x ; (ii) the mean production cost, C. 30 72 May (c) Label the point M(x,C) on the scatter diagram. 19) Calculater by hand. (10) 28 68 June 21 (a) Draw a scatter diagram for this data. Use a scale of 2cm for 5000 folders on the horizont axis and 2 cm for 10 000 Euros on the vertical axis. 55

The manager of a folder factory recorded the number of folders produced by the factory (in thousands) and the production costs (in thousand Euros), for six consecutive months Folders produced, (thousands) Production costs, C (thousand Euros) January February March 15 10 35 40 22 60 April (b) Write down, for this set of data (i) the mean number of folders produced, x ; (ii) the mean production cost, C. 30 72 May (c) Label the point M(x,C) on the scatter diagram. 19) Calculater by hand. (10) 28 68 June 21 (a) Draw a scatter diagram for this data. Use a scale of 2cm for 5000 folders on the horizont axis and 2 cm for 10 000 Euros on the vertical axis. 55

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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