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I Radwand
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University of California, Davis
Department of Statistics
Statistics 100: Applied Statistics for Biological Sciences
Fall, 2017
Professor David Lang
Contact Information: Email:
Office Hours:
Class:
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(b Pr is, = 59/109 = 0.5? = 57%
B $r2A = \ frEAS = 1,37,
Lecture 6
Chapter 7 Hypothesis Testing
Notice that we can say condence intervals support or do not support particular claims. What we
want is to be specic, and quantify how much or little they support
STA 100  Lecture 4
Chapter 4
The most widely used continuous random variable is the DOI mag random variable.
The density curve for the normal random variable is symmetric, with a single mode. It is a
Lecture 5
Recall, the interval 17 + 1. 645 %. This depends on )7 being normally distributed and knowing the
value of a. We estimate a by s, but then the distribution 18 no longer normal, it is
W9 d9
Lecture 7
Chapter 7 Hypothesis Testing
Notice that we can say condence intervals support or do not support particular claims. What we
want is to be specic, and quantify how much or little they support
Lecture 1
Statistics The science of collecting, describing, and analyzing data. We use statistics to draw
inference on unknown quantities using data we collect.
Terminology
 Categorical Data Data tha
258
Exercises
Chapter 16 Exercises
16.5 The distribution of carbon dioxide (CO2) emissions in Table 1.6 is strongly skewed
to the right. The United States and several other countries appear to he high
Exercises
245
Chapter 13 Exercises
13.7 A recent study investigated the influence that proximity and visibility of food have
on food intake. A total of 40 secretaries from the University of Illinois p
Exercises
241
(a) To compare the mean scores across classes, what are the degrees of freedom
for the ANOVA F statistic?
(b) The MSG =11.806. If sp = 2.16, what is the F statistic?
(c) Give an approxim
Exercises
237
(b) Find the leastsquares line. Summarize the significance test for the slope.
What do you conclude?
(c) State carefully what the slope tells you about the relationship between wages
an
242
Exercises
(a) Give a table with sample size, mean, standard deviation, and standard error
for each condition.
(b) Perform a oneway ANOVA for these data. Be sure to state your hypotheses,
the test
Exercises
259
Suppose you are interested in the wealth of typical billionaires. Bootstrap an
appropriate statistic, inspect the bootstrap distribution, and draw conclusions based on
this sample.
16.31
Exercises
261
Chapter 17 Exercises
17.5 A sandwich shop owner takes a daily sample of 6 consecutive sandwich orders at
random times during the lunch rush and records the time it takes to complete each
Exercises
Female
Male
191
152
0
253
27
515
Use logistic regression to study the question of whether or not gender is related to
alcohol use in people who are fatally injured in bicycle accidents.
248
Exercises
experiment as one part of this examination. Some of the data are given in Table 13.2
reproduced below. The diameters in millimeters (mm) of five tools were measured by
the same operator
Exercises
263
it is clear that in effect the measurements were made to the nearest 0.001 inch, not to the
nearest 0.0001 inch.
Calculate x and s for the first two samples. The data file ex17_19 contai
254
Exercises
Chapter 15 Exercises
15.3 Refer to Exercise 15.1. State appropriate null and alternative hypotheses for this
setting and calculate the value of W, the test statistic.
Group A 55
2
Group
260
Exercises
16.77 Exercise 2.17 (page 97) describes a study that suggests that the pain caused by
social rejection really is pain, in the sense that it causes activity in brain areas known to
be act
238
Exercises
Chapter 11 Exercises
11.3 Recall Exercise 11.1. Due to missing values for some students, only 86 students
were used in the multiple regression analysis. The following table contains the
Exercises
251
Chapter 14 Exercises
14.1 If you deal one card from a standard deck, the probability that the card is a heart
is 0.25. Find the odds of drawing a heart.
14. 3
A study was designed to com
Exercises
239
Summarize your results. Include a plot of the data with the leastsquares regression
line. Plot the residuals versus each of the other two chemicals. Are any patterns
evident? (The conce