Chapter 5 &6
Friday, April 28
More on the Binomial
Suppose we have a six sided die where 4 sides have an R and two have a G. Say we roll the
die 4 times (and that it is fair).
a. Find the probability rolling an R.
b. What is the probability of all 4 tosse
Statistics 13B, Fall 2014, Practice Midterm II Version A
Instructions:
5. A fair die is tossed twice and event A= the sum of
two tosses equals to 7, event B= the rst toss is 3.
Which of the following is true?
45 minutes, closed book midterm
one letter-s
Statistics 13B, Fall 2014, Practice Midterm II Version A
Instructions:
4. Refer to Problem 3, what is the probability of getting
exactly three heads?
45 minutes, closed book midterm
(a)
one letter-sized (double-sided) cheat-sheet, hand
held calculator a
Statistics 13B, Fall 2014, Practice Midterm I Version A
Instructions:
4. Refer to Problem 3. The histogram of the weights of
trouts is
45 minutes, closed book midterm
(a) bimodal
one letter-sized (double-sided) cheat-sheet, hand
held calculator and scra
Statistics 13B, Fall 2014, Practice Midterm III Version A
Instructions:
3. Suppose Z is the standard normal random variable,
what is P(Z > 1.35)? (choose the closest answer)
45 minutes, closed book midterm
(a) 0.9115
one letter-sized (double-sided) chea
Statistics 13B, Fall 2014, Practice Midterm III Version A
Instructions:
4. The z-score representing the rst quartile of the standard normal distribution is approximately (choose
the closest answer)
45 minutes, closed book midterm
(a) 0.67
one letter-siz
Statistics 13B, Fall 2014, Midterm II Version A
Instructions:
answer: a
4. Given that s2 = 144, s2 = 36, r = 0.5, n = 17 the
x
y
slope of the regression line of y on x is:
45 minutes, closed book midterm
one letter-sized (double-sided) cheat-sheet, hand
Statistics 13B, Fall 2014, Midterm III Version A
Instructions:
(d) all of the above
45 minutes, closed book midterm
(e) none of the above
answer: e
one letter-sized (double-sided) cheat-sheet, hand
held calculator and scrap paper are allowed
4. Suppose
Statistics 13B, Fall 2014, Midterm I, October 24, 4:10pm to 4:55pm, Version B
Instructions:
(c) 45%, or 22,500 voters interviewed who plan to
vote for her
45 minutes, closed book midterm
(d) 55%, or 27,500 voters interviewed who plan not to
vote for her
Discussion 3 - Probability Distributions, Binomial Distriubion, and Normal Distribution
Chapters 5 & 6
Name_
SHORT ANSWER. Write your answer in the space provided or on a separate sheet of paper.
Provide an appropriate response.
1) Anna uses the letter X
Sections 6.4 & 6.5
Name_
SHORT ANSWER. Write your answer in the space provided or on a separate sheet of paper.
Provide an appropriate response.
1) Three randomly selected households are surveyed as a pilot project for a larger survey to be conducted
late
NEGATIVE z Scores
z
0
Table A-2 Standard Normal (z) Distribution: Cumulative Area from the LEFT
z
.00
.01
.02
.03
.04
.05
.06
.07
-3.50 and
lower
.0001
-3.4
.0003
.0003
.0003
.0003
.0003
.0003
-3.3
.0005
.0005
.0005
.0004
.0004
-3.2
.0007
.0007
.0006
.00
Section 6.3
Name_
SHORT ANSWER. Write your answer in the space provided or on a separate sheet of paper.
Using the following uniform density curve, answer the question.
1) What is the probability that the random variable has a value greater than 5?
2) Wha