TN 11 (4.2, 4.3)
Review of TN 10:
1.
A bag has 10 blue, 5 red and 25 green balls.
a. What is the sample space for drawing one ball from the bag?
b. What is the probability that in drawing one ball, yo
Worksheet C4_2
1. You toss a coin three times in a row.
a. What is the probability of getting heads all three times?
b. What is the probability of not getting heads at all?
c. What is the probability
TN 14 (6.2)
Go over chapter 4 quiz
Warmup: A local business believes that if a customer enters the store, there is a probability of .45 that the customer will
make a purchase. Suppose that 9 customers
Name
Phone
Circle (circle):8am/ 9:30amI 11 am
TEST I FormA
Math 1107-Fall2014
LearningObjectives
1. Students will be able to use statistical vocabulary and notation appropriately. SGircn
thic
i'-
3. S
Teaching Notes 10 (4.1, 4.2)
Lets review the frequency table that we had earlier in the
semester:
The probability of an event is
#
(Discuss bag of balls from game)
The collection of all the possibl
Worksheet 8_2 (t test)
Conduct a hypothesis test using the process discussed in class.
1. A government report indicates that in 2012 the mean cost for a normal delivery of a baby was
$9775. A consumer
Final exam review part 1: This is material from the teaching notes from unit 1. You can find the answers in your
notes.
1. A local hospital wants to survey parents whose children were born at their ho
Final exam review part 2: This is material from the teaching notes from unit 2. You can find the answers in your
notes.
1. A bag has 10 blue, 5 red and 25 green balls.
a. What is the sample space for
Teaching Notes 18
Review z scores.
Use InvNorm to find z-scores (or cut off values) that define the
middle 90% in the standard Normal curve.
If we continue InvNorm process with the standard Normal dis
Worksheet 4.3
1. A sports store has a covered bin with different colored golf balls. If customers correctly guess the color of the ball
before they pull it out, they win the ball. There are 10 white,
Day 10Sections 2.2 and 2.3 and Chapter 3p.12
Day 10 Homework
Testing on numbers:
I want you to be able to get these numbers from the calculator and be able to interpret them. I will also
ask you to ca
Answers to Worksheet C11_2
Problem A:
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
Positive and linear
The correlation r = .825
Y-hat = .91 + .7x
0.7 (grams of protein)/(grams of fat)
As fat content increases b
Worksheet 7.3 (section 7.2 in book)
Directions: Round answers to three decimal places. For problems asking for confidence intervals, you
must also give the margin of error. Be prepared to not only giv
Answers to worksheet C11_1
1.a. predictor: amt. of sleep
b. predictor: time on HW
response: how tired you are
response: grade on test
2. positive, linear
3. negative, linear
4. non-linear, mostly nega
Worksheet C1_2
For problems 1 -6, use the following choices to describe the type of sampling being considered by a
school board for a county system with 45 schools to get feedback from teachers on an
Worksheet C8_1 Answers
1. N(17,4)
H0: = 17
HA: > 17
n=25
Sigma = 4
Alpha = .05
Sample mean = 19
P-value = .0062
Since p-value is < , we reject the null
hypothesis
This study supports the claim that th
Worksheet C1_1: This is meant to give you an idea of the types of questions I could ask from the class notes.
Use your notes to help you.
Choose the best answer.
1.
An education researcher randomly se
Answers to Worksheet C4_2
1. a.
b.
c.
0.125
0.125
0.875
2. a. i.
ii.
iii.
0.1
0.7
0.8
b. i.
ii.
iii.
3.
(.2)(.2) = 0.04
(.2)(.4) = 0.08
(.7)(.7) = 0.49
a.
b.
c.
0.2
0.5
0.8
4. a.
b.
c.
d.
1/52 = 0.019
Worksheet C2_2
1. A study was conducted to examine the cholesterol levels for smokers and ex-smokers. The following table gives
the levels for two groups who participated in a study. Use this data to
Worksheet C8_2 Answers
1.
4.
H0: = 9775
HA: < 9775
n=40
Alpha = .05
Sample mean = 9700
Sample st. dev.= 325
P-value = .0762
Since p-value is > , we fail to reject the null
hypothesis
This study does n
Worksheet C8_3
For problems 1 4, conduct hypothesis tests at the appropriate level given. Be sure to give all of the
information required as discussed in class.
1.
A state university wants to increase
Worksheet C7_2
1.
In a sample of 3250 college students, 1714 of these students had at least one parent who graduated from
college. Our goal is to find a confidence interval to capture the population p
Worksheet 14.1
1. A sample consists of 75 TV sets purchased several years ago. The replacement times of those TV sets
have a mean of 8.2 years. Assume = 1.1 years.
a. Construct the 90%, 95%, and 99% c
Day3-Chapter
4-p.1
Toyou: Bring 3 x 3 inchstickies'and
colored
markers
tomorrow.
Day 3
Chapter
4-Probability
Rules
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