1. Describe your previous mathematical/statistical experiences? When is the last time you took one of these
courses? Was it a positive experience? Do you have concerns for this course as a result? Respond in about a
paragraph.
I have never taken a statist
1. For the dataset in #12D on p. 42, calculate the
a. mean - 6
b. sample standard deviation 3.34664
c. median - 6
d. range - 9
e. mode none
f. MAD 2.66
g. AAD 2.66
2. Answer question #14 on page 43 of your coursepack. Give a brief explanation for your ans
1. Answer #5 on page 109 of your coursepack. To get to the solution, give me the:
The students in a random sample were asked if they had visited the recreation center at
least once per week. Out of the random sample of 81 students, 27 said they visited th
Quiz 5
1. Answer #2 on page 67 of your coursepack. Let the upper left plot be 1, upper right be 2, lower left be 3,
and lower right be 4. You do not need to draw anything for this problem, just match the correlations.
1. (0.15-0.25) 2. (0.75-0.85), 3. (0.
1. How would you explain variability to a friend who has never taken a statistics class?
I would tell my friend that variability is like the spread in a data set that measures range, IQR, and standard
deviation.
2. Give an example of a numeric variable th
1. Answer #10 on page 150 of your coursepack.
a. the hypothesis (unless its given in the problem) Ho: p1 = 0.48, p2 = 0.41, p3 = 0.11
b. the expected counts
Republican = 1
Democrat = 2
Independent = 3
K=3
E1 = 150*0.48 = 72
E2 = 150*0.41 = 61.5
E3 = 150*0
1.
Answer #12 on page 130 of your coursepack.
a. the hypothesis Ho: 11 , Ha: > 11
b. the test statistic (12.2-11)/5)/8=0.03
c. p-value 0.48
d. decision 0.48 > 0.05 fail to reject Ho
e. conclusion We do not have sufficient evidence that average fire rescue
1. The population is the gas mileages of all autos type A and B.
Hypothesis: H0: A < B <= 0, H1: A >B
Z-test: (28.0-25.3)-0)/.477=5.66
P-value= .00001
Decision: Reject H0
Conclusion: There is evidence to show that auto A has higher gas mileage than auto B
1. Hypothesis: H0: the distribution among registered voters is the same as the previous time.
HA: the distribution among registered voters is different.
Z-test: 9.10
P-value: .0105
Decision: Reject H0
Conclusion: There is evidence that the distribution ha
1. Answer #12 on page 142 of your coursepack.
a. the hypothesis HO: A= B
HA: A B
b. the test statistic 2.7/0.5910 = 4.568
c. p-value p-value > 1
d. decision - 1 > .05 fail to reject Ho
e. conclusion - We do not have sufficient evidence that auto A as bett
Hailey Novak
Quiz 2
Answer the following questions on this sheet. You will need to submit it on e-learning.
1. Answer question 2 on page 11 of your coursepack.
There are many good things that Lind did in his experiment for the cure of scurvy. One thing he
1. Answer #13a on page 103 of your coursepack.
EV= (2*50)=100
2. Answer #13b on page 103 of your coursepack.
There is a 32.3% chance that the sum will be less than 90
3. Answer #14a on page 103 of your coursepack.
4. Answer #14ba on page 103 of your cours
1.
Answer #12 on page 142 of your coursepack A test is run to determine whether auto A has
better gas mileage than auto B. Independent simple random samples of size 40 autos of
type A and 50 of type B were taken with the following results: xA = 28.0 SDA =