Chapter 7: 1, 3, 5, 6, 7, 8, 11, 12, 13, 15, 16, 17, 18, 19, 20, 21, 23, 24, 25, 26, 27, 29,
30, 32, 34, 35, 36, 37, 38, and 42.
A.
a.
B.
a.
C.
a.
D.
a.
1) Association:
Apples: weight in grams, weight in ounces
explanatory, response To predict weight in g
Chapter 2: 2, 3, 6, 8, 9, 11, 13, 15, 17, 19, 20, 21, 23, 25, and 26.
2) A January 2007 Gallup Poll question asked, In general, do you think things have gotten
better or gotten worse in this country in the last five years? Possible answers were Better,
Wo
Chapter 5: 2, 7, 8, 11, 13, 17, 20, 21, 25, 26, 27, 29, 30, 35, 36, 37, 38, 39, and 40.
2) Find an article in a newspaper, magazine, or the Internet that shows a time plot.
A.
B.
C.
D.
Does the article discuss the Ws?
Is the timeplot appropriate for the d
Chapter 3: 1, 3, 5, 7, 9, 10, 12, 16, 17, 21, 23, 25, 27, 29, 30, 32, 33, 36, and 38
1) Graphs in the news. Find a bar chart of categorical data from a newspaper, a magazine, or
the Internet.
A. Is the graph clearly labeled?
B. Does it violate the area pr
Chapter 4: 1, 3, 5, 7, 8, 9, 11, 12, 15, 17, 18, 19, 20, 32, 34, 35, 36, 39, 44, 45, 46, and 50.
1) Find a histogram that shows the distribution of a variable in a newspaper, a magazine, or the
Internet.
From:
A. Does the article identify the Ws?
B. Discu
Chapter 9: 1, 5, 6, 8, 11, 13, 14, 15, 16, 17, 20, 21, 22, 23, 24, 25, 27, 29, 31, 32 and 34.
1)
a. There is a clear change in trend over the past 100 years from 1890 1940, the trend is
linear and consistent, but then at 1940, the age dropped suddenly to
Chapter 10: 2, 4, 5, 6, 7, 8, 9, 10, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 25, 27, 28, and
30.
2)
A. Curved pattern, rexpress to straighten the relationship
B. Fan shape, reexpress to equalize spread
C. No pattern, so fine
4)
A. Wavy pattern, so it cont
Chapter 12: 1, 3, 4, 5, 7, 8, 10, 14, 15, 16, 17, 18, 23, 24, 25, 26, 27, 28, 29, 30, 32, and 36.
1)
A. No they are not using a simple random sample because the sampling gets 500 men and 500
women - this is unlikely to happen in a simple random sample
B.
Chapter 11: 1, 3, 11, 12, 13, 14, 19, 21, 22, 23, 25, 28, 32, 34, 35, and 40.
1)
A coin flip is random because the outcome cannot be predicted before
3)
State lotteries - machine gives numbered balls. If the lottery were random(balls generate
numbers with
wostner:probability:exercises:rolling dice 2007 ulf wostner <wostner@cyberprof.com> Last modified: March 21 2009 16:24. This is a large collection of routine probability exercises with answers, so you can get enough practice. Show all formulas and fr
Chapter 6: 4, 5, 9, 12, 17, 18, 19, 21, 23, 24, 27, 29, 31, 33, 34, 36, 37, 39, 41, 43, 44, 46, and
47
4) A specialty foods company sells gourmet hams by mail order. The hams vary in size from
4.15 to 7.45 pounds, with a mean weight of 6 pounds and standa
Chapter 22: 1, 2, 4, 5, 6, 8, 9, 17, 18, 19, 20, 22, 25, 26, and 28 - Due Thursday July 17
1) Unlikely samples show observes difference because no real difference in proportions.
2) Not unusual to observe difference of 1% by sampling.
4) No evidence of ch
Chapter 26: 1, 2, 3, 4, 7, 8, 23, 25, 26, 28, 29, 30, 31, 34, 36, 38, and 40
1)
A. Chi-square test of Independence. 1 sample, 2 vars if account type independent of trade type
B. Some other statistics test - account size is quantative, not counts
C. Chi-sq
Chapter 25: 1, 2, 3, 4, 19, 22, 26, 28, 31, and 32
1)
A. Randomly assign 50 pens of regular/additive, compare the mean egg production at the end of
the month
B. Randomly divide 100 hens to 50 hens. Feed the hens in the first group the regular feed for two
Survey for the project in Math 80 (Statistic)
1. Are you full time or part time student?
Yes
No
2. How many units do you take?
3. On average, how many hours do you spend studying a week?
4. Do you receive any outside help (teachers, friends, and so on)?
Y
Bryn Mawr College
Department of Physics
Mathematics Readiness Examination
for Introductory Physics
There are 71 questions and you should do this exam in two and a
half hours. Do not use any books, calculators, or computers.
1. If x 1 = 2, then x + 1 =
(A)
Chapter 13: 3, 5, 6, 8, 10, 11, 12, 14, 15, 16, 20, 22, 24, 26, 27, 28, 32, 36, 37, 41, 42, 44, 46
and 47.
A.
B.
C.
D.
3.
Retrospective observational study
Yes because MS is uncommon
US military personnel
vitamin D blood levels; subject developed MS?
A.
B
Chapter 14: 1, 2, 3, 5, 6, 7, 12, 13, 15, 19, 21, 23, 25, 26, 28, 29, 30, 31, 32, 35, 41, 42, 43,
and 44.
A.
B.
C.
D.
1.
S= (TH, HH, TT, HT) Equally likely to occur for all.
S= (0, 1, 2, 3) Not likely. Family of 3 could have 2 boys. Only one result in 3 b
Chapter 18: 1, 2, 3, 4, 5, 6, 7, 9, 12, 18, 20, 27, 28, 29, 30, 31, 32, 34, 37, 39, 40, 44, 46, 49,
50, and 51 - Due Friday July 11
1)
Centered at 0.05 and N gets larger= more unimodal and symmetric.
Centered at 0.85 and N gets larger= more unimodal and s
wostner : worksheet : mendel experiment
2007-2009 ulf wostner <wostner@cyberprof.com> Mendel's TheoryGregory Mendel [1822-1884], the father of genetics In a famous experiment, Mendel studied four types of peas:
RY = " round yellow peas" RG = "
latest edit: Tuesday, March 24, 01:12 pm
wostner : probability : benford distribution exercises
2006-2009 ulf wostner<wostner@cyberprof.com> benford distribution
Definition: A random variable X with DOMAIN = {1, 2, 3, 4, 5 ,6 ,7 , 8, 9} and probab
latest edit: Tuesday, March 10, 01:20 pm
wostner: exercises: binomial distribution - 2
2006-2009 ulf wostner<wostner@cyberprof.com> These problems can be solved using BINOMIAL(n,p) distribution. But, for practical reasons, in some of the problems yo
latest edit: Tuesday, March 10, 04:34 pm
wostner: exercises: binomial distribution - 1
2006-2009 ulf wostner<wostner@cyberprof.com> 1. A family has six children. Assume that each birth boy birth and girl birth are equally likely. What is the probabi
wostner : normal distribution : exercises
2007-2009 ulf wostner <wostner@cyberprof.com>
z=(x-) x=+z For each exercise, graph the normal curve, clearly label the axes, and shade the region. Z = Normal(0, 1)
1. 2. 3. 4. 5.
For Z, the standard normal
Chebyshev ()
wostner : math80 : exercises : chebyshev formula
2007-2009 ulf wostner <wostner@cyberprof.com>
For all the exercises below we assume that we know nothing about the distribution (shape)
1. 2. 3. 4. 5. 6. 7. 8. 9.
What fraction of the
wostner: exercises : percentiles etc
data 147 149 146 147 141 140 145 146 145 147 144 147 142 141 141 143 148 145 147 140 144 140 148 140 140 148 146 150
Create a frequency table for the given data. frequency table
Use your frequency table to calcu
wostner : math80 : exercises:linear interpolation
copyright 2006-2009 ulf wostner <wostner@cyberprof.com> wostner
webcalc
Linear Interpolation is a method that, for example, can help you estimate "missing" values in tables. The method is based on