The following table gives the distribtution of weekly income of 160 families in a town :Weekly Income ( $ )No. of Families2000 – 4000204000 – 6000406000 – 8000508000 –120003212000 –160001616000 -20000(i) Calculate the lower and upper quartile income levels.(ii) It is decided that 80% of the families should pay income tax. What is the minimum taxableincome?

Answered: The following table gives the…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The table below indicates the cost of certain air tel kiosk Z 0.15 0.20 0.25 0.75 0.80 0.85 1.85 1.90 1.95 2.00 2.05 Фz 0.0596 0.0793 0.0987 0.2734 0.2881 0.3023 0.4678 0.4713 0.4744 0.4772 0.4798 If it was stated that, the number of telephone calls received at a switchboard is approximately normal with a mean of 580 calls and a standard deviation of 10. REQUIRED Find the possibility that on a given day the number of calls received at the switchboard will be; Exactly 578 Less than 570 Between 561 and 600 inclusive
11. Use the following data to calculate (a) the size of the labor force and (b) the official unemployment rate: total population, 600; population under 16 years of age or institutionalized, 120; not in labor force, 150; unemployed, 23; part-time workers looking for full-time jobs, 10. (a) the size of the labor force: (b) the official unemployment rate: (c) What is the full-employment rate of unemployment (or NRU) today? percent (d) Would you say that the above example shows a year of full employment? ( Yes, No).
3. An assesses depreciated the machinery of his factory by 10% each in the first two years and by 40% in the third year and thereby claimed 21% average depreciation relief from taxation department, but the I.T.O. objected and allowed only 20%. Show which of the two is right. 4. The mean weight of 150 students in a certain class is 60 kilograms. The mean weight of boys in the class is 70 kilogram and that of the girls is 55 kilograms. Find the number of boys and number of girls in the class.
Ages of 150 Rank and File Employees of ABC Financing Co. No. of employees Age (years) fx 18 - 22 19 23 27 27 - 28 - 32 35 33 37 40 38 42 29 N 150 Efx = %3D E fx X = X = Ans
The Big Mac index is a way of measuring Purchasing Power Parity (PPP) between different countries. By diverting the average national Big Mac prices to U.S. dollars, the same goods can be informally compared. The Big Mac can also be a good indicator for the individual purchasing power of an economy since he exists worldwide in standard size, composition and quality. Price # of Countries Rel. f. Cum. f 1.50-1.99 2 2.00-2.49 4 2.50-2.99 7 3.00-3.49 9. 3.50-3.99 7 4.00-4.49 8 4.50-4.99 9 5.00-5.49 7 5.50-5.99 1 6.00-6.49 2 6.50-6.99 1 a. What is the statistical name of the table above? b. How many countries were sampled? c. State the class width. d. Calculate the mean and standard deviation of the average prices of a Big Mac worldwide. Attach correct symbols and units to your answers. Explain how you obtained your answers.
0.0 .5000 5040 5080 .5120 5160 .5199 .5239 5279 .5319 .5359 0.1 .5398 5438 5478 .5517 .5557 5596 .5636 5675 5714 .5753 0.2 .5793 5832 5871 .5910 5948 5987 .6026 .6064 .6103 6141 0.3 .6179 6217 .6255 .6293 .6331 .6368 .6406 .6443 .6480 6517 0.4 .6554 .6591 .6628 .6664 .6700 .6736 .6772 .6808 .6844 6879 0.5 .6915 .6950 .6985 .7019 .7054 7088 7123 .7157 .7190 7224 0.6 .7257 7291 .7324 .7357 .7389 .7422 7454 .7486 .7517 7549 0.7 7580 7611 7642 7673 .7704 7734 .7764 .7794 7852 7823 0.8 .7881 815 .7910 .7939 7967 .7995 .8023 8051 .8078 .8 106 8133 0.9 8186 .8212 8238 8264 8289 8315 .8340 8365 8389 1.0 8413 8438 .8461 8485 8508 .8531 8554 .8577 8599 8621 1.1 8643 8665 .8686 8708 .8729 8749 8770 8962 .8790 8810 8830 1.2 8849 8869 .8888 8907 .8925 .8944 .8980 8997 .9015 1.3 9032 .9049 .9066 .9082 .9099 9115 .9131 .9147 9162 .9177 1.4 9192 .9207 .9222 .9236 .9251 .9265 .9279 .9292 9306 .9319 1.5 .9332 .9345 9357 .9370 .9382 9394 .9406 .9418 9429 9441 1.6 .9452 .9463 9474 .9484 .9495 9505 .9515…
1. The histogram below summarizes budgets for about 5000 movies. You may assume that values are evenly distributed between the endpoints of each interval. per milion dollars 51 1 0.5 0 (2.18) (0.876) 13 (0.42) (0.228) 50 75 100 (0.067) 200 Movie budgets (Millions of dollars) (0.0035) (a) What percent of movies had a budget between 50 and 100 million dollars? _% (b) Which describes more of the movies (circle one)? budget from $75M-$100M OR budget from $100M-$200M (c) Which is larger (circle one)? median budget OR average budget (d) Calculate the median budget for this dataset. $. million
(b) Table 1 shows consumables usage data from a leading manufacturer. Forecast the demand for August, September and October using: i) a three-month moving average ii) a four-month weighted moving average using 50 percent of the actual usage for the most recent month, 20 percent of two months ago, 15 percent of three months ago and 15 percent of four months ago. Using an example, explain what are the benefits of using the weighted moving average method of forecasting instead? Month February 2023 March 2023 April 2023 May 2023 June 2023 July 2023 Consumables Used 884 892 972 990 956 880

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