A Problem Solving Approach To Mathematics For Elementary School Teachers (13th Edition)
13th Edition
ISBN: 9780135183885
Author: Rick Billstein, Shlomo Libeskind, Johnny Lott, Barbara Boschmans
Publisher: PEARSON
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Chapter 14.2A, Problem 1A
Assessment 14-2A
Describe how to find the image of the given quadrilateral in a reflection in
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5) State any theorems that you use in determining your solution.
a) Suppose you are given a model with two explanatory variables such that:
Yi = a +ẞ1x1 + ẞ2x2i + Ui, i = 1, 2, ... n
Using partial differentiation derive expressions for the intercept and slope
coefficients for the model above.
[25 marks]
b)
A production function is specified as:
Yi = α + B₁x1i + ẞ2x2i + Ui,
i = 1, 2, ... n,
u₁~N(0,σ²)
where:
y = log(output), x₁ = log(labor input), x2 = log(capital input)
The results are as follows:
x₁ = 10, x2 = 5, ỹ = 12, S11 = 12, S12= 8, S22 = 12, S₁y = 10,
= 8, Syy = 10,
S2y
n = 23 (individual firms)
i) Compute values for the intercept, the slope coefficients and σ².
[20 marks]
ii)
Show that SE (B₁) = 0.102.
[15 marks]
iii)
Test the hypotheses: ẞ1
=
1 and B2 = 0, separately at the 5%
significance level. You may take without calculation that SE (a) = 0.78
and SE (B2) = 0.102
[20 marks]
iv)
Find a 95% confidence interval for the estimate ẞ2.
[20 marks]
Page < 2
of 2
- ZOOM +
The set of all 3 x 3 upper triangular matrices
6) Determine whether each of the following sets, together with the standard
operations, is a vector space. If it is, then simply write 'Vector space'. You do not
have to prove all ten vector space axioms. If it is not, then identify one of the ten
vector space axioms with its number in the attached sheet that fails and also show
that how it fails.
a) The set of all polynomials of degree four or less.
b) The set of all 2 x 2 singular matrices.
c) The set {(x, y) : x ≥ 0, y is a real number}.
d) C[0,1], the set of all continuous functions defined on the interval [0,1].
7) Given u = (-2,1,1) and v = (4,2,0) are two vectors in R³-space. Find u xv and
show that it is orthogonal to both u and v.
8) a) Find the equation of the least squares regression line for the data points
below.
(-2,0), (0,2), (2,2)
b) Graph the points and the line that you found from a) on the same Cartesian
coordinate plane.
1. A consumer group claims that the mean annual consumption of cheddar cheese by a person in
the United States is at most 10.3 pounds. A random sample of 100 people in the United States has
a mean annual cheddar cheese consumption of 9.9 pounds. Assume the population standard
deviation is 2.1 pounds. At a = 0.05, can you reject the claim? (Adapted from U.S. Department of
Agriculture)
State the hypotheses:
Calculate the test statistic:
Calculate the P-value:
Conclusion (reject or fail to reject Ho):
2. The CEO of a manufacturing facility claims that the mean workday of the company's assembly
line employees is less than 8.5 hours. A random sample of 25 of the company's assembly line
employees has a mean workday of 8.2 hours. Assume the population standard deviation is 0.5
hour and the population is normally distributed. At a = 0.01, test the CEO's claim.
State the hypotheses:
Calculate the test statistic:
Calculate the P-value:
Conclusion (reject or fail to reject Ho):
Statistics
Chapter 14 Solutions
A Problem Solving Approach To Mathematics For Elementary School Teachers (13th Edition)
Ch. 14.1 - Prob. 1MCCh. 14.1 - Prob. 3MCCh. 14.1 - Prob. 5MCCh. 14.1 - Prob. 6MCCh. 14.1 - Prob. 7MCCh. 14.1 - A drawing of a cube, shown in the following...Ch. 14.1 - Wall stenciling has been used to obtain an effect...Ch. 14.1 - Prob. 10MCCh. 14.1 - The following figure is a partial tessellation of...Ch. 14.1 - Prob. 12MC
Ch. 14.1 - Prob. 13MCCh. 14.1 - Prob. 14MCCh. 14.1 - Prob. 15MCCh. 14.1 - Prob. 18MCCh. 14.1 - Prob. 19MCCh. 14.1 - Prob. 20MCCh. 14.1 - Prob. 21MCCh. 14.1 - Karrin claims that centers of rotation must be at...Ch. 14.1 - A student asks if the image seen through a...Ch. 14.1 - Jillian wants to know why a regular pentagon will...Ch. 14.1 - Prob. 26MCCh. 14.1 - Prob. 1NAEPCh. 14.1 - Prob. 2NAEPCh. 14.1 - Prob. 3NAEPCh. 14.1A - For each of the following, find the image of the...Ch. 14.1A - Prob. 2ACh. 14.1A - Find the coordinates of the image for each of the...Ch. 14.1A - Prob. 4ACh. 14.1A - Prob. 7ACh. 14.1A - Prob. 8ACh. 14.1A - Prob. 9ACh. 14.1A - Prob. 11ACh. 14.1A - Prob. 12ACh. 14.1A - Prob. 13ACh. 14.1A - Prob. 14ACh. 14.1A - Prob. 15ACh. 14.1A - A 1-inch blue square piece of sidewalk chalk is...Ch. 14.1A - Prob. 17ACh. 14.1A - Prob. 18ACh. 14.1A - Prob. 19ACh. 14.1A - Prob. 20ACh. 14.1A - Prob. 22ACh. 14.1A - Prob. 23ACh. 14.1A - Prob. 24ACh. 14.1A - Prob. 25ACh. 14.1A - Prob. 26ACh. 14.1A - Prob. 27ACh. 14.1A - Prob. 28ACh. 14.1B - Prob. 2ACh. 14.1B - Prob. 3ACh. 14.1B - Prob. 4ACh. 14.1B - Prob. 7ACh. 14.1B - Prob. 11ACh. 14.1B - Prob. 12ACh. 14.1B - Prob. 13ACh. 14.1B - Prob. 14ACh. 14.1B - Prob. 15ACh. 14.2 - Prob. 1MCCh. 14.2 - Prob. 2MCCh. 14.2 - Prob. 3MCCh. 14.2 - Prob. 4MCCh. 14.2 - Prob. 5MCCh. 14.2 - Prob. 6MCCh. 14.2 - Prob. 7MCCh. 14.2 - Prob. 8MCCh. 14.2 - Prob. 9MCCh. 14.2 - Prob. 13MCCh. 14.2 - Prob. 15MCCh. 14.2 - Prob. 17MCCh. 14.2 - Prob. 18MCCh. 14.2 - Prob. 19MCCh. 14.2 - Prob. 20MCCh. 14.2 - Prob. 22MCCh. 14.2 - Prob. 1NAEPCh. 14.2 - Prob. 2NAEPCh. 14.2 - Prob. 3NAEPCh. 14.2 - Prob. 4NAEPCh. 14.2 - Prob. 5NAEPCh. 14.2A - Assessment 14-2A Describe how to find the image of...Ch. 14.2A - Prob. 2ACh. 14.2A - Assessment 14-2A Determine the final result when...Ch. 14.2A - Prob. 4ACh. 14.2A - Assessment 14-2A a. Refer to the following figure...Ch. 14.2A - Prob. 6ACh. 14.2A - a. Reflect triangle ABC across line j, then across...Ch. 14.2A - Assessment 14-2A Given ABC and its reflection...Ch. 14.2A - Prob. 9ACh. 14.2A - Prob. 10ACh. 14.2A - Decide whether a reflection, a translation, a...Ch. 14.2A - a. Conjecture what the image of a point with...Ch. 14.2A - Prob. 16ACh. 14.2A - Prob. 17ACh. 14.2A - Prob. 18ACh. 14.2A - Point P is the image of P not shown under a glide...Ch. 14.2A - Consider the glide reflection determined by the...Ch. 14.2B - Prob. 1ACh. 14.2B - Prob. 2ACh. 14.2B - Determine the final result when ABCis reflection...Ch. 14.2B - Prob. 4ACh. 14.2B - Prob. 6ACh. 14.2B - Prob. 7ACh. 14.2B - Prob. 8ACh. 14.2B - Prob. 9ACh. 14.2B - Prob. 10ACh. 14.2B - Prob. 11ACh. 14.2B - Prob. 12ACh. 14.2B - Prob. 13ACh. 14.2B - Prob. 14ACh. 14.2B - Prob. 15ACh. 14.2B - In which line will the two intersecting circles...Ch. 14.2B - Prob. 18ACh. 14.2B - If PQ is the image PQ not shown under a glide...Ch. 14.2B - Prob. 20ACh. 14.2B - Prob. 21ACh. 14.3 - Prob. 1MCCh. 14.3 - Prob. 2MCCh. 14.3 - Prob. 3MCCh. 14.3 - Prob. 5MCCh. 14.3 - Prob. 6MCCh. 14.3 - Prob. 7MCCh. 14.3 - Prob. 8MCCh. 14.3 - Prob. 9MCCh. 14.3 - Prob. 10MCCh. 14.3 - Prob. 12MCCh. 14.3 - Prob. 13MCCh. 14.3 - Prob. 14MCCh. 14.3 - Prob. 15MCCh. 14.3 - Prob. 16MCCh. 14.3 - Prob. 17MCCh. 14.3A - In the following figures, describe a sequence of...Ch. 14.3A - Prob. 2ACh. 14.3A - In each of the following drawings, find...Ch. 14.3A - Prob. 4ACh. 14.3A - AB is the image of a candle AB produced by a box...Ch. 14.3A - Prob. 6ACh. 14.3A - Prob. 7ACh. 14.3A - Prob. 8ACh. 14.3A - Prob. 9ACh. 14.3A - Prob. 10ACh. 14.3A - Prob. 11ACh. 14.3A - Prob. 12ACh. 14.3A - Prob. 13ACh. 14.3B - Prob. 1ACh. 14.3B - Prob. 2ACh. 14.3B - Prob. 4ACh. 14.3B - Prob. 5ACh. 14.3B - Prob. 6ACh. 14.3B - Prob. 7ACh. 14.3B - Prob. 8ACh. 14.3B - Prob. 9ACh. 14.3B - Prob. 11ACh. 14.3B - Prob. 12ACh. 14.3B - Prob. 13ACh. 14.CR - Prob. 1CRCh. 14.CR - Prob. 2CRCh. 14.CR - Prob. 3CRCh. 14.CR - Prob. 4CRCh. 14.CR - Given that STAR in the figure shown is a...Ch. 14.CR - Prob. 6CRCh. 14.CR - Given that SNOSWO in the following figure,...Ch. 14.CR - Prob. 8CRCh. 14.CR - Prob. 9CRCh. 14.CR - Prob. 10CRCh. 14.CR - If a translation determined by (x,y)(x+3,y2) is...Ch. 14.CR - Prob. 12CRCh. 14.CR - Prob. 13CRCh. 14.CR - On a 1-m equilateral triangle pool table, a ball...Ch. 14.CR - Prob. 15CRCh. 14.CR - Prob. 16CRCh. 14.CR - Prob. 17CRCh. 14.CR - Prob. 18CRCh. 14.CR - Prob. 19CRCh. 14.CR - Prob. 21CRCh. 14.CR - Prob. 22CRCh. 14.CR - Prob. 23CRCh. 14.CR - Prob. 24CRCh. 14.CR - Prob. 25CRCh. 14.CR - Prob. 26CRCh. 14.CR - What dilation, if any, allows a line with equation...Ch. 14 - Prob. 1NT
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