Concept explainers
a.
To show that the probability distribution is valid
a.
Answer to Problem 9PPS
The distribution of the probability is valid.
Explanation of Solution
Given information:
Probability distribution for grade A is 0.29
Probability distribution for grade B is 0.43
Probability distribution for grade C is 0.17
Probability distribution for grade D is 0.11
Probability distribution for grade F is 0
For probability distribution to be valid,
- The probability of each value must be equal to or greater than zero or less than equal to 1
- The addition of probabilities of value must be equal to 1
Here, every value is greater than zero and less than 1 and addition of values (0.29+0.45+0.17+0.11+0) is equal to 1
Therefore, the distribution of the probability is valid.
b.
To calculate:
The probability that a randomly chosen student has no higher than grade B
b.
Answer to Problem 9PPS
The probabilityfor a randomly chosen student have got not more than grade B is
Explanation of Solution
Given information:
Probability distribution for grade A is 0.29
Probability distribution for grade B is 0.43
Probability distribution for grade C is 0.17
Probability distribution for grade D is 0.11
Probability distribution for grade F is 0
Calculation:
Probability for a randomly chosen student have grade not more than B can be calculated when the sum of grade B, C, D, F is divided by total number of probability given,
Therefore, the probability for a randomly chosen student have got not more than grade B is
c.
To graph:
The probability distribution of algebra test grades
c.
Explanation of Solution
Given information:
Probability distribution for grade A is 0.29
Probability distribution for grade B is 0.43
Probability distribution for grade C is 0.17
Probability distribution for grade D is 0.11
Probability distribution for grade F is 0
Graph:
Interpretation:
The graph for the probability distribution for algebra test grades can obtained by using the data from the probability distribution table. The given data is plotted in the bar graph
Chapter 12 Solutions
Algebra 1
Additional Math Textbook Solutions
Elementary Statistics (13th Edition)
University Calculus: Early Transcendentals (4th Edition)
Intro Stats, Books a la Carte Edition (5th Edition)
Pre-Algebra Student Edition
Calculus: Early Transcendentals (2nd Edition)
- Listen ANALYZING RELATIONSHIPS Describe the x-values for which (a) f is increasing or decreasing, (b) f(x) > 0 and (c) f(x) <0. y Af -2 1 2 4x a. The function is increasing when and decreasing whenarrow_forwardBy forming the augmented matrix corresponding to this system of equations and usingGaussian elimination, find the values of t and u that imply the system:(i) is inconsistent.(ii) has infinitely many solutions.(iii) has a unique solutiona=2 b=1arrow_forwardif a=2 and b=1 1) Calculate 49(B-1)2+7B−1AT+7ATB−1+(AT)2 2)Find a matrix C such that (B − 2C)-1=A 3) Find a non-diagonal matrix E ̸= B such that det(AB) = det(AE)arrow_forwardWrite the equation line shown on the graph in slope, intercept form.arrow_forward1.2.15. (!) Let W be a closed walk of length at least 1 that does not contain a cycle. Prove that some edge of W repeats immediately (once in each direction).arrow_forward1.2.18. (!) Let G be the graph whose vertex set is the set of k-tuples with elements in (0, 1), with x adjacent to y if x and y differ in exactly two positions. Determine the number of components of G.arrow_forward1.2.17. (!) Let G,, be the graph whose vertices are the permutations of (1,..., n}, with two permutations a₁, ..., a,, and b₁, ..., b, adjacent if they differ by interchanging a pair of adjacent entries (G3 shown below). Prove that G,, is connected. 132 123 213 312 321 231arrow_forward1.2.19. Let and s be natural numbers. Let G be the simple graph with vertex set Vo... V„−1 such that v; ↔ v; if and only if |ji| Є (r,s). Prove that S has exactly k components, where k is the greatest common divisor of {n, r,s}.arrow_forward1.2.20. (!) Let u be a cut-vertex of a simple graph G. Prove that G - v is connected. עarrow_forward1.2.12. (-) Convert the proof at 1.2.32 to an procedure for finding an Eulerian circuit in a connected even graph.arrow_forward1.2.16. Let e be an edge appearing an odd number of times in a closed walk W. Prove that W contains the edges of a cycle through c.arrow_forward1.2.11. (−) Prove or disprove: If G is an Eulerian graph with edges e, f that share vertex, then G has an Eulerian circuit in which e, f appear consecutively. aarrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_ios
- Algebra and Trigonometry (6th Edition)AlgebraISBN:9780134463216Author:Robert F. BlitzerPublisher:PEARSONContemporary Abstract AlgebraAlgebraISBN:9781305657960Author:Joseph GallianPublisher:Cengage LearningLinear Algebra: A Modern IntroductionAlgebraISBN:9781285463247Author:David PoolePublisher:Cengage Learning
- Algebra And Trigonometry (11th Edition)AlgebraISBN:9780135163078Author:Michael SullivanPublisher:PEARSONIntroduction to Linear Algebra, Fifth EditionAlgebraISBN:9780980232776Author:Gilbert StrangPublisher:Wellesley-Cambridge PressCollege Algebra (Collegiate Math)AlgebraISBN:9780077836344Author:Julie Miller, Donna GerkenPublisher:McGraw-Hill Education