Math 373
Hw 28 Recommended problems, don't turn this in.
Hw 463: 11.40, 11.42 Rec 463: 11.39, 11.41, 11.43.
Page 463.
11.40'. We have a 32 experiment. Factor A has 2 levels,
cfw_1, 2, factor B has 3 l
Math 373
Hw 27 Recommended problems, dont turn this in.
Hw 453: 11.29', 11.31'. Rec 453: 11.29, 11.31.
(d)(2) Find the 95% confidence interval for the difference Page 453. in means for treatments A an
Math 373
Hw 26 Recommended problems, don't turn this in.
Hw 438: 11.7,8. Rec: 438: 11.1 - 11.6.
Page 438. 11.3. You have 6 treatment populations based on independent random samples (hence they have a
Math 373
Hw 25 Recommended problems, don't turn this in.
Hw 400: 10.44. 407: 10:54, 10:56. Rec 407: 10.55', 10.57, 10.58.
Page 400. 10.55'. Independent random samples from two normal populations have
Math 373
Hw 14 Recommended problems, don't turn this in.
Hw 292: 8.22, 8.24. 298: 8.36, 8.40.
Page 392.
8.21 Find the 90% confidence interval for the population
mean .
(a) n = 125, x = .84, s2 = .086
Math 373
Hw 17 and 18 Recommended problems, don't turn this in.
Hw 335: 9.2abc, 9.4abcd, 9.8, 9.10'. Rec 335: 9.1, 9.7, 9.9, 9.11.
Page 335. 9.1 Find the appropriate acceptance and rejection regions f
Math 373
Hw 16 Recommended problems, don't turn this in.
Hw 308: 8.56, 8.58, 8.60b, 8.62. 8.64. Rec 308: 8.55, 8.57, 8.61, 8.63.
Page 308. Let E = the maximum allowed error.
Write both the answer n an
Math 373
Hw 19 Recommended problems, don't turn this in.
Hw 336: 9.4, 9.11. Rec 336: 9.1, 9.7, 9.9, 9.11.
Page 335. Acceptance intervals are repeated from the recommended exercises for Hw 17. 9.7 A ra
Math 140
Hw 26 Recommended problems, don't turn this in.
(a) Give the unsimplified exact answer obtained using the
law of sines or cosines or Straight V Thm. E.g.
a 8 2 5 2 285 cos20 0 or b
5 sin100 o
Math 140
Hw 27 Recommended problems, don't turn this in.
E. 4, /6
C
b
A
a
B
c
A(a). sinB = 1/ 2 ,
What are the possible values, in degrees, for VB?
(b). cosB = 1/ 2 ,
What is the possible value, in de
Math 140
Hw 23 Recommended problems, don't turn this in.
Write each expression as a sum or difference of
trigonometric functions. Don't calculate the answer.
L. 2 cos 2 cos 0
A. sin 20 cos 10
B. cos
5
Math 140
Hw 20 Recommended problems, don't turn this in.
(1) Graph over one period (period doesn't have to start at 0).
(2) List the x-intercepts. (3) List both coordinates of the
highest and lowest p
Math 140
Hw 22 Recommended problems, don't turn this in.
Evaluate the expressions.
A. sin
3
4
2
Picture for D and E.
.
5
b
First find cos q. The quadrant determines the sign.
q
4
D. (a) sin 2 (b) co
Math 140
Hw 21 Recommended problems, don't turn this in.
(1) Simplify using an addition formula (show the step
immediately after the addition formula). First point.
(2) Complete the simplification.
Se
Math 140
Hw 24 Recommended problems, dont turn this in.
Evaluate exactly without a calculator: p and 2 rather than
3.14 or 1.41. Answer may be undef.
L. sintan 1 1
5 symbol fraction with square root
A
Math 140
Hw 25 Recommended problems, dont turn this in.
2sina has 5 symbols, 2sin(a) has 7 symbols.
A. When earth E, Mercury M, and the sun S are lined up
so that VEMS is a right angle, VSEM is 21o. G
Math 140
Hw 16
For each angle, sketch the reference angle, draw an
arrow to indicate the angle's direction. A reference
angle must be positive and < /2 = 90o.
A. (a) 110o
(b) 60o
Recommended problems.
Math 140
Hw 17
Recommended problems, don't turn this in.
Simplify.
sin 2 Acos 2 A
A. sin Acos A
q
Hint: factor the top.
3
B. sin 2 cos csc 3 sec
4x
b
C. cot B sin 2 B cot B
D.
3
2x
cos 2 Acos A12
N.
Math 140
Hw 18
Recommended problems, don't turn this in.
For A-D: (a) Rewrite in terms of an angle in [0,p/2]. (b) Find the
exact answer, no decimals. See the example. point each.
sec 2 tan 2
1cot 2
Math 140
Hw 19
Recommended problems, don't turn this in.
Find the period and amplitude.
A.
period=
amplitude=
F. y 3 sin (x/2
amplitude=
6
period=
5
1
x-intercepts:
3 4
2
-6
increases on:
B.
period=
a
Math 140
Hw 15
Recommended problems, don't turn this in.
Remember to include any needed units, e.g., mi/hr, rad/sec. Except
for 5ab, give only exact answers. No decimals.
A. Convert 45o to radian meas
Math 140
Hw 14
Recommended problems, don't turn this in.
Write N(t) in base e form. Then solve the problem.
A. A colony of bacteria starts with 2000 bugs. Two hours
later it has 3800.
N(t) =
(a) How m
Math 140
Hw 13
Recommended problems, don't turn this in.
Simplify.
A. log 10 70 log 10 7
Express in terms of natural logarithms ln.
N. log 10 6.
B. log 7 7
O. log 10 e
C. log 3 108 log 3 3/4
D. 1 ln e
Math 140
Hw 8
Recommended problems, don't turn this in.
v Write the function in the form: y ax h 2 k.
E.g., rewrite y x 1 2 as y x 1 2 0.
v List the roots.
v Graph. On the graph mark the vertex and gi
Math 140
Hw 7
Recommended problems, don't turn this in.
A. fx 3x 1
(a) Find f 1 x
In E, F, G, graph the function. Circle 1-1 if 1-to-1;
circle not 1-1 if not.
F. y x 2 1
1-1?
not 1-1?
G. y 1/x
(c) Gra
Math 140
Hw 10
Recommended problems, don't turn this in.
Graph and on the graph mark the x and y-intercepts. Label the
degrees of the roots. No credit if the graph isn't smooth.
A. y x 3 4x 2 5x
B. y