Concept explainers
Carefully read through the list of terminology we’ve used in this Unit. Consider circling the terms you aren’t familiar with and looking them up. Then test your understanding by using the list to fill in the appropriate blank in each sentence. Hint: One word is used twice.
axis
bar graph
categorical frequency distribution
classes
commutative
complement
compound interest
coordinates
data
degrees
element
empirical probability
exponential growth
grouped frequency distribution
histogram
interest
intersection
like quantities
linear growth
lower limit
origin
perimeter
pie chart
plotting points
population
probability
raw data
rectangular
representative sample
roster method
sample
scale
scientific notation
set
simple interest
stem and leaf plot
theoretical probability
time-series data
time-series graph
union
universal set
upper limit
Venn diagram
well-defined
x axis
y axis
The data collected for a statistical study are called _______________.

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Chapter 1 Solutions
ALEKS 360 ACCESS CODE- PATHWAY MATH LIT
- A chemical reaction involving the interaction of two substances A and B to form a new compound X is called a second order reaction. In such cases it is observed that the rate of reaction (or the rate at which the new compound is formed) is proportional to the product of the remaining amounts of the two original substances. If a molecule of A and a molecule of B combine to form a molecule of X (i.e., the reaction equation is A + B ⮕ X), then the differential equation describing this specific reaction can be expressed as: dx/dt = k(a-x)(b-x) where k is a positive constant, a and b are the initial concentrations of the reactants A and B, respectively, and x(t) is the concentration of the new compound at any time t. Assuming that no amount of compound X is present at the start, obtain a relationship for x(t). What happens when t ⮕∞?arrow_forwardConsider a body of mass m dropped from rest at t = 0. The body falls under the influence of gravity, and the air resistance FD opposing the motion is assumed to be proportional to the square of the velocity, so that FD = kV2. Call x the vertical distance and take the positive direction of the x-axis downward, with origin at the initial position of the body. Obtain relationships for the velocity and position of the body as a function of time t.arrow_forwardAssuming that the rate of change of the price P of a certain commodity is proportional to the difference between demand D and supply S at any time t, the differential equations describing the price fluctuations with respect to time can be expressed as: dP/dt = k(D - s) where k is the proportionality constant whose value depends on the specific commodity. Solve the above differential equation by expressing supply and demand as simply linear functions of price in the form S = aP - b and D = e - fParrow_forward
- Find the area of the surface obtained by rotating the circle x² + y² = r² about the line y = r.arrow_forward3) Recall that the power set of a set A is the set of all subsets of A: PA = {S: SC A}. Prove the following proposition. АСВ РАСРВarrow_forwardA sequence X = (xn) is said to be a contractive sequence if there is a constant 0 < C < 1 so that for all n = N. - |Xn+1 − xn| ≤ C|Xn — Xn−1| -arrow_forward
- 3) Find the surface area of z -1≤ y ≤1 = 1 + x + y + x2 over the rectangle −2 ≤ x ≤ 1 and - Solution: TYPE YOUR SOLUTION HERE! ALSO: Generate a plot of the surface in Mathematica and include that plot in your solution!arrow_forward7. Walkabout. Does this graph have an Euler circuit? If so, find one. If not, explain why not.arrow_forwardBelow, let A, B, and C be sets. 1) Prove (AUB) nC = (ANC) U (BNC).arrow_forward
- Q1: find the Reliability of component in the system in fig(1) by minimal cut method. Q2: A component A with constant failure rate 1.5 per 1000 h, B per to 2 in 1000h, A and B in parallel, find the Reliability system? [ by exponential distribution]. Q3: Give an example to find the minimal path and estimate the reliability of this block diagram. Q4: By Tie set method find the Reliability of fig (2) FUZarrow_forwardA sequence X = (xn) is said to be a contractive sequence if there is a constant 0 < C < 1 so that for all n = N. - |Xn+1 − xn| ≤ C|Xn — Xn−1| -arrow_forward1) Suppose continuous random variable X has sample space S = [1, ∞) and a pdf of the form f(x) = Ce-(2-1)/2. What is the expected value of X?arrow_forward
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