Math 221 Guides d'étude, Notes de cours & Résumés

What is the intersection of sets Correct Answer elements common to both A and B What is the union of sets Correct Answer all elements in A or B What is a complement of a set Correct Answer all elements given in the universal set that are not in A What is the relative complement of a set Correct Answer all elements in B that are not in A Linear function definition Correct Answer increases by a constant value of one common difference Geometric function definition Correct Answer mult...

Question 1 2 / 2 pts (CO6) From a random sample of 55 businesses, it is found that the mean time that employees spend on personal issues each week is 5.8 hours with a standard deviation of 0.35 hours. What is the 95% confidence interval for the amount of time spent on personal issues? (5.74, 5.90) (5.73, 5.87) (5.72, 5.88) Correct! (5.71, 5.89) Question 2 0 / 2 pts (CO6) If a confidence interval is given from 8.54 to 10.21 and the mean is known to be 9.375, what is the maximum erro...

MATH 221 MT 1 EXAM WITH COMPLETE SOLUTION R^n - CORRECT ANSWERS all ordered n-tuples of real numbers based vectors - CORRECT ANSWERS a vector v is considered as an arrow from the origin to a point p Parallelogram Law for Vector Addition - CORRECT ANSWERS If two vectors acting simultaneously at a point can be represented both in magnitude and direction by the adjacent sides of a parallelogram drawn from a point, then the...

NWEA Math 221-230 Exam Questions With Complete Solution 5-frame - CORRECT ANSWERS 1.Direction 2. Distance 3. Time 4. Origin 5. Axis absolute value - CORRECT ANSWERS The distance a number is from zero on a number line algebra - CORRECT ANSWERS the mathematics of generalized arithmetical operations algebraic equation - CORRECT ANSWERS a number sentence that contains an equal sign and algebraic ex...

uestion 1 2 / 2 pts The probability of drawing one card and getting queen is 4/52. This would be considered: Subjective probability Empirical probability Manufactured probability Classical probability IncorrectQuestion 2 0 / 2 pts Given the following information, find the probability that a randomly selected student will be very tall. Number of students who are very short: 45, short: 60, tall: 82, very tall: 21 21.0% 10.1% 21.6% 49.5% Question 3 2 / 2 pts Given the following inf...

MATH 221 week 8 2023 REFLECTION QUESTIONS WITH SOLUTIONS NEW Quiz

Question 1 1 / 1 pts I met with my group and completed this Group Quiz with them. Correct! True Question 2 1 / 1 pts Which of the following variables is/are quantitative? (Mark all that apply.) The telephone number of a randomly selected business in town. The 3 most common brands of car found in the US. Correct! The number of people in a randomly selected classroom on campus. Question 3 1 / 1 pts Students in an Introductory Statistics class at BYU-Idaho were studying prices of col...

Math 221 Exam Questions With All Correct Answers Understand the problem-reword Devise a plan- identify subgoals, think of the best method (such as making a table or guess and check) Carry out the plan- stay organized and show all work Look back- check your work and make sure you answered the question (working backwards) - Polya's problem solving method counting numbers {1,2,3...} - Natural numbers includes zero {0,1,2,3...} - Whole numbers includes negative numbers {-1,-2,-3,0,1,...

d/dx (log b X) Correct Answer 1/ (X ln(b)) d/dx (a^x) Correct Answer a^x (ln a ) d/dx (tan x) Correct Answer sec^2x d/dx (cot x) Correct Answer -csc^2 x d/dx (csc x) Correct Answer -csc x * cot x d/dx (sec x) Correct Answer sec x * tan x d/dx (arctan x) (TEST) Correct Answer 1/(x^2 + 1) d/dx (arcsin x) (TEST) Correct Answer 1/ (sqrt (1- x^2)) d/dx (arcsec x) (TEST) Correct Answer 1/ (sqrt (x( x^2- 1))) d/dx (sinh x) (TEST) Correct Answer cosh x d/dx (cosh x) (TEST) ...

System of Equations: Consistent/Inconsistent Has a solution (or many)= Consistent No solution= inconsistent Matrices: Echelon Form Requirements 1. All nonzero rows are above zero rows 2. each leading entry of a row is in a column to the right of the leading entry of the row above it 3. all entries in a column below a leading entry are 0s Matrices: Reduced Echelon Form Requirements all 3 of Echelon Form 4. each leading entry in each nonzero row is a 1 5. each leading 1 is the only nonzer...