In a class of 20 students, average mark obtained by them is 68. If the marks...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
In a class of 20 students, average mark obtained by them is 68. If the marks of two students were misread as 68 and 49 instead of the actual marks 86 and 60 respectively, what would be the correct average? 1. 78.5 2. 69.45 3. 59.5 4. 70 66 5. In a class of 20 students, average mark obtained by them is 68. If the marks of two students were misread as 68 and 49 instead of the actual marks 86 and 60 respectively, what would be the correct average? 1. 78.5 2. 69.45 3. 59.5 4. 70 66 5.
Expert Answer:
Answer rating: 100% (QA)
Solution 2 GIVEN Total number of students are 20 Ini... View the full answer
Related Book For
Probability and Random Processes With Applications to Signal Processing and Communications
ISBN: 978-0123869814
2nd edition
Authors: Scott Miller, Donald Childers
Posted Date:
Students also viewed these mathematics questions
-
A certain gym teacher has a class of 20 students. He wants to divide them into four teams of five students each in order to have a class basketball tournament. (a) How many different ways can he...
-
In a class of 100 students, 10 score at 20, 20 score at 40, 30 score at 60, and 40 score at 80. Because students did so poorly, the professor moves each score half way up toward 100 (so the students...
-
In a class of 100 students, 10 score at 20, 20 score at 40, 30 score at 60, and 40 score at 80. What is the average score in the class? Use the idea of the weighted average to find the above.
-
Does the customer buying process end when a customer buys some merchandise? Explain your answer.
-
In the real business cycle model, suppose that government spending increases temporarily. Determine the equilibrium effects of this. Could business cycles be explained by fluctuations in G? That is,...
-
Return to question Charleston Company has elected to use the dollar-value LIFO retail method to value its inventory. The following data has been accumulated from the accounting records: Cost...
-
The inversion point of a gas can be mathematically expressed as (a) \(T_{i}=\frac{2 a b}{R}\) (b) \(T_{i}=\frac{2 b}{R a}\) (c) \(T_{i}=\frac{2 a}{R b}\) (d) None of these.
-
Regional Airlines is establishing a new telephone system for handling flight reservations. During the 10:00 A.M. to 11:00 A.M. time period, calls to the reservation agent occur randomly at an average...
-
Raymond Supply, anational hardware chain, is considering purchasing a smaller chain,Strauss & Glazer Parts (SGP). Raymond\'s analysts project thatthe merger will result in the following free cash...
-
Thomas was raised with an understanding of the fundamental differences between right and wrong. As an adult, he wasn't making enough money to purchase a new car as quickly as he liked. He found out...
-
21st Century Farms Inc. is a high-tech farming operation that has successfully patented methods for quick and efficient farming 365 days a year in all kinds of weather. As their accountant, you have...
-
A very good poker player is expected to earn \($1\) per hand in \($100\)/\($200\) Texas Holdem. The standard deviation is approximately \($32\). (a) What is the probability a very good poker player...
-
Suppose a geyser has a mean time between eruptions of 74 minutes. If the interval of time between the eruptions is normally distributed with standard deviation 26 minutes, answer the following...
-
Deficits and fiscal consolidation As seen in the following table, the 2008 financial crisis left the United States with an enormous federal budget deficit in 2009. There was a substantial fiscal...
-
The reading speed of second-grade students in a large city is approximately normal, with a mean of 92 words per minute (wpm) and a standard deviation of 10 wpm. (a) What is the probability a randomly...
-
A simple random sample of size n = 12 is obtained from a population with = 63 and = 19. (a) What must be true regarding the distribution of the population in order to use the normal model to...
-
Consider the users of Facebook with links representing friendships between users. (a) Design a data structure (ADT) to represent the users and friendships. (b) Write a C++ class to implement your...
-
Imagine a sound wave with a frequency of 1.10 kHz propagating with a speed of 330 m/s. Determine the phase difference in radians between any two points on the wave separated by 10.0 cm.
-
Two students play the following game. Two dice are tossed. If the sum of the numbers showing is less than 7, student A collects a dollar from student B. If the total is greater than 7, then student B...
-
Prove the integral identity, It may be easier to show that I2 = 2x. 2 exp-A
-
Let X (t) be a Poisson counting process with arrival rate, . We form two related counting processes, Y1 (t) and Y2 (t), by deterministically splitting the Poisson process, X (t). Each arrival...
-
Estimate the depression in the freezing point if \(58.5 \mathrm{~g}\) of \(\mathrm{NaCl}\) is added to \(1 \mathrm{~L}\) of water at atmospheric pressure.
-
Calculate the molal boiling point elevation constant of benzene if its heat of vaporization at \(80.1^{\circ} \mathrm{C}\) is \(30.67 \mathrm{~kJ} / \mathrm{mol}\).
-
A hydrocarbon \(\mathrm{H}_{2}\left(\mathrm{CH}_{2} ight)_{n}\) is dissolved in a solvent \(S\) which freezes at \(9.0^{\circ} \mathrm{C}\). A solution which contains \(0.90 \mathrm{~g}\) of...
Study smarter with the SolutionInn App