Questions 1 and 2 below use the data in the pharynx.xls file.
1. Find the mean, median, 10th percentile, 90th percentile, standard deviation and range
of age of
a) All patients.
Mean= 60.4, Median=60, 10th percentile 57, 90th percentile 74, StDEV= 11.22,
MATH 2P98
Assignment 1
Due: May 22nd, 2013
1. Thirteen individuals experienced an unexplained episode of vitamin D intoxication that required
hospitalization. It was thought that these might be the result of excessive supplementation of dairy
milk. Blood
Probability
Example 1 : Your roommate asked you to pick up toothpaste and dental rinse. The store has
eight brands of toothpaste and ﬁve brands of dental rinse. What is the probability that you will
purchase the correct brands?
," a. x L: _L .2 ,‘
Exam
Final Examination December 12 2008
Math 1P98
page 1 of 22
THIS EXAMINATION PAPER WILL NOT BE PLACED IN THE LIBRARY.
BROCK UNIVERSITY
Final Examination: Dec 2008
Course: Math 1P98
Date of Examination: Dec 12
Time of Examination: 7:00 -10:00 pm
Number of Pa
Hypothesis Testing: Which Formula Goes Where?
Questions for practice at finding formulas and Ho etc.
Choose a formula and Ho, H1, it is good practice for finding the proper formulas!
1. The length of five random rocks on Sunrise Shores was found as 12,
Math 1P98 Final Exam December 2007
page 1 of 21
THIS EXAMINATION PAPER WILL NOT BE PLACED IN THE LIBRARY.
BROCK UNIVERSITY
Final Examination: December 2007
Course: Math 1P98
Date of Examination: December 8
Time of Examination: 2:00 -5:00 pm
Number of Page
Minitab Instructions for Various Confidence Intervals
CI for when is known
Step 1: Click "Stat" then Highlight "Basic Statistics" then Click "1 Sample z."
Step 2: Click the "Summarized Data" button.
Step 3: Enter the Sample Size, Mean, Standard Deviation.
Minitab Instructions for Normal Distribution
Finding Areas under the Normal Curve (this is given x, find probability)
Step 1: Click "Calc" then Highlight "Probability Distributions" then Click "Normal."
Step 2: At the top of the box, Select "Cumulative Pr
Recommended Questions
Note: This will be heavily Minitab based . We need understanding of the meaning of
the formulas and ability to calculate parts of the formulas. However, we will mainly be
interpreting Minitab output.
Sec 9.1 Pg 514-519 #1, 3, 5, 11,
Example 1: We conduct a survey of 35 millionaires to find out what percent of their income the
average millionaire donates to charity. We discover that the mean percent is 15 and from a
previous study, the standard deviation is 5 percent. Find a 95% confi
December 2004 Answers
1) b
29) e
57) b
2) e
30) a
58) c
3) c
31) e
59) c
4) a
32) c
60) b
5) d
33) a
61) a
6) d
34) e
62) c
7) OMIT
35) b
63) c
8) b
36) e
64) d
9) c
37) a
65) a
10) c
38) b
66) c
11) a
39) a
67) e
12) d
40) d
68) b
13) b
41) b
69) d
14) c
Confidence Intervals: Which Formula Goes Where?
(We will not calculate these out but will identify key words and distinguish formulas and methods.)
1.The volume of sound in a computer has a scale from 0 to 5. A sample of 37 computer users found a
mean vol
Recommended Questions Chapter 1-3
Do not hand these in, they are for practice, answers are in the back of the text book:
Sec 1.1 (just read pages 4-6) Pg 10-11 #3, 7, 9
Sec 2.1 Pg 50-54 #5, 7, 11a)-e), 13a)-e), 19
Sec 3.1 Pg 89-93 #1, 3, 7, 9, 13, 15 (usi
Practice Questions on 2-Sample Hypothesis Testing NOT to Be Handed In
Instructions Read Carefully You will be tested on this material in your second test
1. All Minitab output should be placed on the same page as the corresponding hypothesis test.
2. Any
December 2007 Answers
1) a
29) c
57) c
2) b
30) c
58) a
3) c
31) a
59) d
4) b
32) d
60) c
5) d
33) b
61) a
6) a
34) a
62) c
7) b
35) b
63) c
8) c
36) a
64) a
9) d
37) c
65) a
10) d
38) d
66) b
11) c
39) OMIT
67) b
12) e
40) c
68) a
13) OMIT
41) b
69) d
14
Scatterplot of Sales vs Advertising
Scatterplot of Water vs Weight
90
240
80
230
70
Water
Sales
220
210
200
60
50
40
190
30
180
20
1.50
1.75
2.00
2.25
2.50
2.75
100
120
140
160
Advertising
200
220
Scatterplot of Test Score vs TV
200
100
180
90
Test Score
Histogram
Histogram of On Hold
9
8
8
7
Frequency
6
5
5
4
3
3
3
2
1
1
0
3
6
9
On Hold
12
15
Histogram of On Hold
9
8
8
7
Frequency
6
5
5
4
3
3
3
2
1
1
0
1.5
4.5
7.5
10.5
13.5
16.5
On Hold
Dotplot
Dotplot of On Hold
2
4
6
8
On Hold
10
12
14
Minitab Instructions for ANOVA
Step 1: Enter Data into Columns and Label the columns with a word for convenience.
Step 2: Click "Stats" then Highlight "ANOVA" then Click "One Way (Unstacked)"
Step 3: In the box labelled "Reponses (in separate columns)" pu
Minitab Instructions for Chi-Square Test
Chi-Square Goodness of Fit
We will not use Minitab to conduct this test.
Chi-Square Test for Independence and Test for Homogeneity of Proportions
Step 1: Enter the data into the columns and label the columns.
Step
Final Examination December 12 2008 Math 1P98 page 19 of 22
B1. independent random samples of households in three provinces were taken
and the annual energy consumption was recorded. The energy consumptions
form normal distributions with approximately equa
Recommended Questions
Sec 10.4 Just the introduction to the F test page 632-633. (Omit the rest)
Sec 10.5 Pg 653 #1, 3, 7 By Hand
(Make Minitab outputs also and compare the answers, the Minitab Output will be very
important for your exam)
=
=
= +
Recommended Questions
Sec 10.1 (Omit Pg 600-603)
Sec 10.1 Pg 604-608 #9, 15
(Try these in Minitab, compare the Minitab P value to that found in the Chi-square Table)
Sec 10.2 Pg 613-617 #5, 11, 13
(Minitab cannot do a Chi-square Goodness of Fit)
Conﬁdence Intervals: Which Formula Goes Where?
(We will not calculate these out but will identify key words and distinguish formulas and methods.)
1.The volume of sound in a computer has a scale from 0 to 5. A sample of 37 computer users found a
mean volu
Hypothesis Testing: Which Formula Goes Where?
0 Questions for practice at ﬁnding formulas and Ho etc.
0 Choose a formula and H0, H1, it is good practice for ﬁnding the proper formulas!
1. The length of ﬁve random rocks on Sunrise Shores was found as 12, 1
How to Look up Area under the Curve given z-values
z = -2.35
z = -0.54
z = 2.59
z = 2.71
z=0
z = 1.54
Note: Any z-value less than -3.49 is 0, Any z-value greater than 3.49 is 1.
Example 1: A medical study found that medical residents' mean number of hours
Example 1: Employees in a large accounting firm claim that the mean salary of the firms
accountants is less than that of its competitors, which is $45,000. A random sample of 30 of the
firms accountants has a mean salary of $43,500 and a standard deviatio