Following are the data for the daily production rates of a certain item from a manufacturer. `17, 21, 18, 27, 17, 21, 20, 22, 18, 23`. The production manager of the company feels that a standard deviation of more than 3 items a day production indicates unacceptable -rate variations.Should the manager be concerned about plant-production rates ?

If the s.d of-5, -4,-3, -2,-1, 0, 1, 2, 3, 4, 5 is sqrt(10) then find the standard deviation of 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25

Directions (Questions 6-10): Study the following graph and answer the questions that follow: Production (in tonnes) and Sales (in tonnes) of Company A from 2006 to 2011 (FIGURE) The table given below represents the ratio of the production (in tonnes) of Company A to the production (in tonnes) of Company B and ratio of sales of Company A and Company B Year Production (A : B) Sales (A : B) 2006 5 : 4 2 : 3 2007 8 : 7 11 : 12 2008 3 : 4 9 : 14 2009 11 : 12 4 : 5 2010 14 : 13 10 : 9 2011 13 : 14 1 : 1 What is the approximate percentage increase in the production of Company A from 2009 to 2010? (a) 18% (b) 38% (c) 23% (d) 27% (e) 32%

The marks scored by 20 students in a Science test (30 marks) are given below : 8, 7, 12, 17, 20, 11, 16, 21, 28, 25, 27, 18, 20, 19, 7, 29, 16, 15, 20, 27. Using the data answer the following questions : How many students scored more than 20 marks?

A cottage industry manufactures pedestal lamps and wooden shades.Both the products require machine time as well as craftsman time in the making.The number of hours required for producing 1 unit of each and the corresponding profit is given in the following table: In a day,the factory has availability of not more than 42 hours of machine time and 24 hours of craftsman time. Assuming that all items manufactured are sold,how should the manufacturer schedule his daily production in order to maximise the profit?Formulate it as an LPP and solve it graphically

A cottage industry manufactures pedestal lamps and wooden shades.Both the products require machine time as well as craftsman time in the making.The number of hours required for producing 1 unit of each and the corresponding profit is given in the following table: In a day,the factory has availability of not more than 42 hours of machine time and 24 hours of craftsman time. Assuming that all items manufactured are sold,how should the manufacturer schedule his daily production in order to maximise the profit?Formulate it as an LPP and solve it graphically

Two years ago Mayank obtained degree in food technology. For some time he worked in a company manufacturing bread and biscuits. He was not happy in the company and decided to have his own bread and biscuits manufacturing unit. For this he decided the objectives and the targets and formulated action plan to achieve the same. One of his objective was to earn 50% profit on the amount invested in the first year.It was decided that raw materials like flour sugar, salt, etc will be purchased on two months credit. He also decided to follow the steps required for marketing the products through his own outlets He appointed Harsh as a Production Manager who decided the exact manner in which the production activities are to be carried out. Harsh also prepared a statement showing the requirement of workers in the factory throughout the year. Mayank informed Harsh about his sales target for different products areawise for the forthcoming quarter. While working on the production table a penalty of 150 per day was announced for not wearing the helmet. gloves and apron by the workers Quoting lines from the above para identify and explain the different types of plans discussed