Homework 4 Solutions
(a) The table gives P (Z 1.13) = 0.1292. Therefore P (Z > 1.13) = 1 0.1292 =
(b) The table yields P (Z 0.18) = 0.5714.
(c) The table doesnt consider Z > 8 but it does say that P (Z 8) P (Z 3.5) =
Homework 3 Solutions
(a) False. If it is a fair coin, it will be 50% likely to land Heads the next time.
(b) False. There are face cards that are red.
(c) True. No face card is also an Ace.
(a) 10 times. The probability
Homework 2 Solutions
1.39: Plots (1) and (3) show a positive association. (1) is linear and (3) is not. Plot (2)
shows no association. Plot (4) shows a linear negative association.
1.42: The sample mean is 6.25 hours per night. T
Homework 5 Solutions
(a) The point estimate for the average is 171.1. For the median it is 170.3.
(b) For standard deviation: 9.4. For IQR: 177.8 163.8 = 14.
(c) The 180cm person is not unusually tall because, the person is
e c se :
Using the graphs, nd the limits indicated below, if they exist If the limit does not exist, write DNE.
maroz 16(75): Ls
limxr f (x)
mama f (x)
limx f (x)=
limxM f Finding Limits From 3
Graphs of Polynomial Functions
Examples / Activity
3) y = 3x4+x34x2 - 3x 2 4) y = x54x* + 253169:2 + 12x + 5
5) y = x+2x5 + x4 x33:»c2 + 1
(a ~i flu
8) y = x3+4-x2 + 3x - 8
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1. Use the graph of fat) given above to evaluate the following:
e) limxm f(x)
Homework 1 Solutions
1.2 Sinusitis and antibiotics. Researchers studying the effect of antibiotic treatment for
acute sinusitis compared to symptomatic treatments randomly assigned 166 adults diagnosed
with acute sinusitis to one