Rules Teams of five or less students. Choose team name Write up
four answer cards: A, B, C and D Answer when prompted. Winning
teams players earn a small bonus on Exam 3.
Slide 3
Question 1 A two-tailed hypothesis test with = 3% has what
critical value(s)? A. -1.88 B. 1.88 C. 1.88 D. 2.17
Slide 4
Question 1 A two-tailed hypothesis test with = 3% has what
critical value(s)? A. -1.88 B. 1.88 C. 1.88 D. 2.17
Slide 5
Question 2 If a jury convicts an innocent defendant, this is an
example of: A. A Type error. B. A Type error. C. A Type 1 error. D.
A Type 2 error.
Slide 6
Question 2 If a jury convicts an innocent defendant, this is an
example of: A. A Type error. B. A Type error. C. A Type 1 error. D.
A Type 2 error.
Slide 7
Question 3 For the HT problem on the board, the z stat = A.
0.92 B. 1.82 C. 2.05 D. 3.40
Slide 8
Question 3 For the HT problem on the board, the z stat = A.
0.92 B. 1.82 C. 2.05 D. 3.40
Slide 9
Question 4 For the problem on the board, the correct
interpretation of the p-value is: A. There is only a 3.4% chance
that the alternative hypothesis is true. B. There is only a 3.4%
chance that the null hypothesis is true. C. There is only a 3.4%
chance that we would get our data (or worse) assuming the
alternative is true. D. There is only a 3.4% chance that we would
get our data (or worse) assuming the null is true.
Slide 10
Question 4 For the problem on the board, the correct
interpretation of the p-value is: A. There is only a 3.4% chance
that the alternative hypothesis is true. B. There is only a 3.4%
chance that the null hypothesis is true. C. There is only a 3.4%
chance that we would get our data (or worse) assuming the
alternative is true. D. There is only a 3.4% chance that we would
get our data (or worse) assuming the null is true.
Slide 11
Question 5 For the problem on the board, the final answer is:
A. Accept H 0, the population mean is about 1000. B. Accept H 0,
the sample mean is about 1000. C. Reject H 0, the population mean
is greater than 1000. D. Reject H 0, the sample mean is greater
than 1000.
Slide 12
Question 5 For the problem on the board, the final answer is:
A. Accept H 0, the population mean is about 1000. B. Accept H 0,
the sample mean is about 1000. C. Reject H 0, the population mean
is greater than 1000. D. Reject H 0, the sample mean is greater
than 1000.
Slide 13
Question 6 Which statement is FALSE: A. A small p-value is
evidence against the null. B. A large p-value supports the null. C.
A critical value close to zero is evidence against the null. D. A
critical value close to zero supports the null.
Slide 14
Question 6 Which statement is FALSE: A. A small p-value is
evidence against the null. B. A large p-value supports the null. C.
A critical value close to zero is evidence against the null. D. A
critical value close to zero supports the null.
Slide 15
Daily Double! http://www.youtube.com/watch?v=E5LTzcDevrk You
can bet up to half your current score. Leading team tells bet first
If you are wrong, you lose the points. 8 questions remaining.
Category T-Pain
Slide 16
Question 7: Daily Double For a left-tailed t-test (H a : <
100) with n = 15 and = 5%, the correct t crit is: A. 1.761 B. 1.753
C. 2.145 D. None of the above.
Slide 17
Question 7 For a left-tailed t-test (H a : < 100) with n =
15 and = 5%, the correct t crit is: A. 1.761 B. 1.753 C. 2.145 D.
None of the above. t crit = -1.761.
Slide 18
Question 8 Do FLC students spend more than $700 annually on
textbooks? Assume that you survey 50 students and find that the
average book cost is $817 with sd $223. At = 5%, is there
significant statistical evidence that, on average, FLC students
spend more than $700 annually? A. >, z, p B. , z,
Slide 19
Question 8 Do FLC students spend more than $700 annually on
textbooks? Assume that you survey 50 students and find that the
average book cost is $817 with sd $223. At = 5%, is there
significant statistical evidence that, on average, FLC students
spend more than $700 annually? A. >, z, p B. , z,
Slide 20
Question 9 A population proportion is claimed to be 75%. Your
sample has n = 60 and x = 49. Is the claim right or wrong? What is
the sample proportion? A. 23% B. 75% C. 82% D. 119%
Slide 21
Question 9 A population proportion is claimed to be 75%. Your
sample has n = 60 and x = 49. Is the claim right or wrong? What is
the sample proportion? A. 23% B. 75% C. 82% D. 119%
Slide 22
Question 10 A population proportion is claimed to be 75%. Your
sample has n = 60 and x = 49. Is the claim right or wrong? Which is
true: A. The p-value absolutely rejects the null B. The p-value
rejects the null, but its close. C. The p-value is plausible. D.
The p-value absolutely confirms the null.
Slide 23
Question 10 A population proportion is claimed to be 75%. Your
sample has n = 60 and x = 47. Is the claim right or wrong? Which is
true: A. The p-value absolutely rejects the null B. The p-value
rejects the null, but its close. C. The p-value is plausible. D.
The p-value absolutely confirms the null.
Slide 24
Question 11 On a Yes or No question, 65% of men (out of 40)
answered Yes and 82% of women (out of 50) answered Yes. Is the
percentage of women who answered Yes significantly higher ( = 5%)?
A. No, accept the null, theyre the same. B. Yes, accept the null,
the proportion is higher. C. No, reject the null, theyre the same.
D. Yes, reject the null, the proportion is higher.
Slide 25
Question 11 On a Yes or No question, 65% of men (out of 40)
answered Yes and 82% of women (out of 50) answered Yes. Is the
percentage of women who answered Yes significantly higher ( = 5%)?
A. No, accept the null, theyre the same. B. Yes, accept the null,
the proportion is higher. C. No, reject the null, theyre the same.
D. Yes, reject the null, the proportion is higher.
Slide 26
Daily Double! http://www.youtube.com/watch?v=E5LTzcDevrk You
can bet your entire current score! Leading team tells bet first If
you are wrong, you lose the points. 4 questions remaining. Category
Its All Greek to Me
Slide 27
Question 12: Daily Double H 0 : 1 = 2 p-value = 17% H a : 1 2 z
stat = -1.37 = ???z crit = 2.33 A. = 1% B. = 2% C. = 5% D. =
10%
Slide 28
Question 12 H 0 : 1 = 2 p-value = 17% H a : 1 2 z stat = -1.37
= ???z crit = 2.33 A. = 1% B. = 2% C. = 5% D. = 10%
Slide 29
Question 13 For an ANOVA test, which alternative hypothesis is
not correct: A. Not all the means are the same. B. At least one
mean is different. C. All the means are different. D. The means are
not all the same.
Slide 30
Question 13 For an ANOVA test, which alternative hypothesis is
not correct: A. Not all the means are the same. B. At least one
mean is different. C. All the means are different. D. The means are
not all the same.
Slide 31
Question 14 H 0 : = 600p-value = ??? H a : > 600z stat =
2.65 = 5%z crit = 1.65 A. p-value = 0% B. p-value = 0.4% C. p-value
= 4% D. p-value = 5%
Slide 32
Question 14 H 0 : = 600p-value = ??? H a : > 600z stat =
2.65 = 5%z crit = 1.65 A. p-value = 0% B. p-value = 0.4% C. p-value
= 4% D. p-value = 5%
Slide 33
Question 15 Assume that p-value = 2.3 * 10 -8. Which statement
is true? A. The null hypothesis is absolutely false. B. The null
hypothesis is very, very likely false. C. The null hypothesis is
very, very likely true. D. The null hypothesis is absolutely
true.
Slide 34
Question 15 Assume that p-value = 2.3 * 10 -8. Which statement
is true? A. The null hypothesis is absolutely false. B. The null
hypothesis is very, very likely false. C. The null hypothesis is
very, very likely true. D. The null hypothesis is absolutely
true.
