Example 9.27 The average daily sales of 500 branch officials was Rs 1,50,000 and the standard devia-tion was Rs 15,000. Assuming the distribution to be normal, indicate how many branches have salesbetween:(i) Rs 1,20,000 and Rs 1,45,000(ii) Rs 1,40,000 and Rs 1,65,000(iii) More than Rs 1,65,000

Answered: Image /qna-images/answer/da1a9886-fbb8-4511-b040-50b1a96368e7.jpg

Answered: Example 9.27 The average daily sales 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

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You are tasked with comparing two Icelandic equity funds. The other fund is called the RU IS Equity Fund (RIS). The other fund is called HÍ IS Equity Fund (HIS). It is known that the funds had the following ratios in certain shares over the period 2018 to 2021 (it is not assumed that they received dividends during the period). The proportions did not change over the period. The price of individual shares over the period can be found in the red box down below the text. a) Draw a picture that compares the development of 100,000 ISK. investments in each fund made at the beginning of 2018 b) What was the return on RIS and HIS over the period c) What was the average annual return of RIS and HIS over the period d) What is the correlation between the exchange rates of these two funds? Also show calculations with a formula e) What is the variance and what is the standard deviation of each fund? Why is this information important when it comes to investment decisions?
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
12. Below are given the wages earned by workers per week in a certain factory. Monthly income (Rs) Number of workers Upto Rs 10 50 Upto Rs 20 150 Upto Rs 30 300 Upto Rs 40 500 Upto Rs 50 700 Upto Rs 60 800 Draw an ogive.
42. In a working class budget enquiry in towns A and B, it was found in 2014 that an average working class family's expenditure on food and other items was as follows : Town A Town B 50% 50% () Food (i) Other items In 2017, the consumer price index stood at 279 for town A, 265 for town B (Base year 2014 = 100). It was known that the rise in the prices of all articles consumed by the working class was the same for A and B. What was the 2017 index for (a) food, and (b) other items ? 64% 36%
Average monthly wages (per employee) in 4 sectors of an economy are as follows: industry: 2000 dinars, building: 2200 dinars, agriculture: 1500 dinars, services: 1800 dinars. Number of people employed in the four sectors are 5 million, 2 million, 6 million, and 2 million, respectively. Using the concept of harmonic mean compute the average monthly wages in the economy under consideration.
3. A coffee chain owner is concerned with the proportion of people who would rather order a coffee from another store. The corporate office tells her that from a separate large-scale study, they found the true proportion to be p = 0.6. As she wants to estimate this proportion herself, she asks 20 people in line whether they would switch and records a ‘1’ if they said “Yes” and records a ‘0’ otherwise. (a) Based on this study, what is the approximate distribution of the sample proportion pˆ? State all parameters and assumptions required for your answer. (b) The store owner wants to determine the cutoff point for the sample proportion for which the probability of observing a larger sample proportion is 0.50. That is, find the value ‘a’ such that P(ˆp > a) = 0.50. Show all your work. Explain how you could have found your answer immediately without using the Normal probability table and using a property about the Normal distribution.
b. At the level of significance, use Fisher's LSD procedure to test for the equality of the means for manufacturers and . Calculate Fisher's LSD Value (to decimals).
n 1997 Fuller and coworkers at Texas A&M University estimated the operating costs of cotton gin plants of various sizes. The operating costs of the next to the smallest plant is shown in the following table. x 2000 4000 6000 8000 10000 12000 y 163,200 230,480 301,500 376,160 454,400 536,400 Here x is the annual number of bales produced, and y is the dollar total cost. (Use 4 decimal places in your answer.) A. Determine the best fitting line using least squares. Also determine the square of the correlation coefficient. The best fitting line is C(x) = . The square of the correlation coefficient is r2 = . B. The study noted that revenue was $63.25 per bale. At what level of production will this plant break even? The revenue equation is R(x) = The profit equation is P(x) = The production will break even when bales are produced. C. What are the profits or losses when production is 3000 bales? 4000 bales? (Round to the nearest cent.) When 3000 bales are produced, the…
A manufacturer has the following data on the variation of its prices in relation to the quantity demanded: at a unit price of $ 78.00, the quantity demanded is 1200 units. With a 36% increase in price, the quantity demanded drops to 28.08 units. To determine: a) The amount that must be needed for a recipe to be maximum, a amount received maximum and the unit price. b) Determine in which quantity sold intervals the revenue is increasing and decreasing.

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