Nature of Mathematics (MindTap Course List)
13th Edition
ISBN: 9781133947257
Author: karl J. smith
Publisher: Cengage Learning
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Chapter 2.3, Problem 54PS
To determine
a.
To show:
The completed Venn diagram in the following given situation.
In an interview of 50 students,
12 liked Proposition 8 and Proposition 13.
18 liked Proposition 8, but not Proposition 5.
4 liked Proposition 8, Proposition 13, and Proposition 5.
25 liked Proposition 8.
15 liked Proposition 13.
10 liked Proposition 5, but not Proposition 8 nor Proposition 13.
1 liked Proposition 13 and Proposition 5, but not Proposition 8.
To determine
b.
To find:
The number of persons who do not like any of the three propositions.
To determine
c.
To find:
The number of persons who like Proposition 8 and Propositions 5.
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Students have asked these similar questions
Question 4
Fourteen individuals were given a complex puzzle to complete. The times in seconds was recorded
for their first and second attempts and the results provided below:
1
2
3
first attempt
172
255
second attempt 70
4 5
114 248 218
194 270 267 66
6 7
230 219
341 174
8
10
9
210 261 347 218 200 281
199 308 268 243 236 300
11
12
13
14
140
302
a. Calculate a 95% confidence interval for the mean time taken by each individual to
complete the (i) first attempt and (ii) second attempt. [la]
b. Test the hypothesis that the difference between the two mean times for both is 100
seconds. Use the 5% level of significance.
c. Subsequently, it was learnt that the times for the second attempt were incorrecly
recorded and that each of the values is 50 seconds too large. What, if any, difference
does this make to the results of the test done in part (b)? Show all steps for the
hypothesis test
Question 3
3200 students were asked about the importance of study groups in successfully completing their
courses. They were asked to provide their current majors as well as their opinion. The results are given
below:
Major
Opinion Psychology Sociology Economics Statistics Accounting Total
Agree
144
183
201
271
251
1050
Disagree
230
233
254
227
218
1162
Impartial
201
181
196
234
176
988
Total
575
597
651
732
645
3200
a. State both the null and alternative hypotheses.
b. Provide the decision rule for making this decision. Use an alpha level of 5%.
c. Show all of the work necessary to calculate the appropriate statistic. |
d. What conclusion are you allowed to draw?
c. Would your conclusion change at the 10% level of significance?
f. Confirm test results in part (c) using JASP. Note: All JASP input files and output
tables should be provided
Question 1
A tech company has acknowledged the importance of having records of all meetings conducted.
The meetings are very fast paced and requires equipment that is able to capture the information in
the shortest possible time. There are two options, using a typewriter or a word processor. Fifteen
administrative assistants are selected and the amount of typing time in hours was recorded. The
results are given below:
1
2
3
4
5
6
7
8
9
10
11 12 13
14
15
typewriter
8.0 6.5
5.0 6.7
7.8
8.5
7.2
5.7
9.2
5.7 6.5
word processor 7.2 5.7
8.3
7.5
9.2
7.2
6.5
7.0
6.9
34
7.0 6.9
8.8
6.7
8.8 9.4 8.6 5.5 7.2
8.4
a. Test the hypothesis that the mean typing time in hours for typewriters is less than 7.0.
Use the 1% level of significance.
b. Construct a 90% confidence interval for the difference in mean typing time in hours,
where a difference is equal to the typing time in hours of word processors minus typing
time in hours of typewriter.
c. Using the 5% significance level, determine whether there is…
Chapter 2 Solutions
Nature of Mathematics (MindTap Course List)
Ch. 2.1 - Prob. 1PSCh. 2.1 - IN YOUR OWN WORDS Distinguish between equal and...Ch. 2.1 - Prob. 3PSCh. 2.1 - Prob. 4PSCh. 2.1 - Tell whether each set in Problems 5-8 is well...Ch. 2.1 - Prob. 6PSCh. 2.1 - Tell whether each set in Problems 5-8 is well...Ch. 2.1 - Tell whether each set in Problems 5-8 is well...Ch. 2.1 - Specify the sets in Problems 9-14 by roster. a....Ch. 2.1 - Specify the sets in Problems 9-14 by roster. a....
Ch. 2.1 - Prob. 11PSCh. 2.1 - Prob. 12PSCh. 2.1 - Specify the sets in Problems 9-14 by roster. a....Ch. 2.1 - Specify the sets in Problems 9-14 by roster. a....Ch. 2.1 - Prob. 15PSCh. 2.1 - Prob. 16PSCh. 2.1 - Prob. 17PSCh. 2.1 - Prob. 18PSCh. 2.1 - Prob. 19PSCh. 2.1 - Prob. 20PSCh. 2.1 - Prob. 21PSCh. 2.1 - Prob. 22PSCh. 2.1 - Prob. 23PSCh. 2.1 - Prob. 24PSCh. 2.1 - Prob. 25PSCh. 2.1 - Prob. 26PSCh. 2.1 - Prob. 27PSCh. 2.1 - Prob. 28PSCh. 2.1 - Prob. 29PSCh. 2.1 - Prob. 30PSCh. 2.1 - Prob. 31PSCh. 2.1 - Prob. 32PSCh. 2.1 - Prob. 33PSCh. 2.1 - Prob. 34PSCh. 2.1 - Prob. 35PSCh. 2.1 - Prob. 36PSCh. 2.1 - Prob. 37PSCh. 2.1 - Prob. 38PSCh. 2.1 - Prob. 39PSCh. 2.1 - Prob. 40PSCh. 2.1 - Prob. 41PSCh. 2.1 - Prob. 42PSCh. 2.1 - Prob. 43PSCh. 2.1 - Prob. 44PSCh. 2.1 - Prob. 45PSCh. 2.1 - Prob. 46PSCh. 2.1 - Prob. 47PSCh. 2.1 - Prob. 48PSCh. 2.1 - Prob. 49PSCh. 2.1 - Decide whether each statement in Problems 46-54 is...Ch. 2.1 - Prob. 51PSCh. 2.1 - Prob. 52PSCh. 2.1 - Prob. 53PSCh. 2.1 - Prob. 54PSCh. 2.1 - Prob. 55PSCh. 2.1 - Prob. 56PSCh. 2.1 - Prob. 57PSCh. 2.1 - Five people plan to meet after school, and if they...Ch. 2.1 - Prob. 59PSCh. 2.1 - Prob. 60PSCh. 2.2 - Prob. 1PSCh. 2.2 - Prob. 2PSCh. 2.2 - Prob. 3PSCh. 2.2 - Prob. 4PSCh. 2.2 - Prob. 5PSCh. 2.2 - Prob. 6PSCh. 2.2 - Prob. 7PSCh. 2.2 - Prob. 8PSCh. 2.2 - Prob. 9PSCh. 2.2 - Prob. 10PSCh. 2.2 - Prob. 11PSCh. 2.2 - Prob. 12PSCh. 2.2 - Prob. 13PSCh. 2.2 - Prob. 14PSCh. 2.2 - Prob. 15PSCh. 2.2 - Prob. 16PSCh. 2.2 - Prob. 17PSCh. 2.2 - Prob. 18PSCh. 2.2 - Prob. 19PSCh. 2.2 - Prob. 20PSCh. 2.2 - Prob. 21PSCh. 2.2 - Prob. 22PSCh. 2.2 - Prob. 23PSCh. 2.2 - Prob. 24PSCh. 2.2 - Prob. 25PSCh. 2.2 - Prob. 26PSCh. 2.2 - Prob. 27PSCh. 2.2 - Prob. 28PSCh. 2.2 - Prob. 29PSCh. 2.2 - Prob. 30PSCh. 2.2 - Prob. 31PSCh. 2.2 - Prob. 32PSCh. 2.2 - Prob. 33PSCh. 2.2 - Prob. 34PSCh. 2.2 - Prob. 35PSCh. 2.2 - Prob. 36PSCh. 2.2 - Prob. 37PSCh. 2.2 - Prob. 38PSCh. 2.2 - Prob. 39PSCh. 2.2 - Prob. 40PSCh. 2.2 - Prob. 41PSCh. 2.2 - Prob. 42PSCh. 2.2 - Prob. 43PSCh. 2.2 - Prob. 44PSCh. 2.2 - Prob. 45PSCh. 2.2 - Prob. 46PSCh. 2.2 - Prob. 47PSCh. 2.2 - Prob. 48PSCh. 2.2 - Draw Venn diagrams for each of the relationships...Ch. 2.2 - Prob. 50PSCh. 2.2 - Draw Venn diagrams for each of the relationships...Ch. 2.2 - Prob. 52PSCh. 2.2 - Prob. 53PSCh. 2.2 - Level 2 From a survey of 100 college students, a...Ch. 2.2 - Level 2 In a survey of a TriDelt chapter with 50...Ch. 2.2 - Prob. 56PSCh. 2.2 - Prob. 57PSCh. 2.2 - Santa Rosa Junior College enrolled 29,000 students...Ch. 2.2 - Prob. 59PSCh. 2.2 - Prob. 60PSCh. 2.3 - What do we mean by De Morgans laws?Ch. 2.3 - Prob. 2PSCh. 2.3 - Prob. 3PSCh. 2.3 - Prob. 4PSCh. 2.3 - Prob. 5PSCh. 2.3 - Prob. 6PSCh. 2.3 - Prob. 7PSCh. 2.3 - Prob. 8PSCh. 2.3 - Prob. 9PSCh. 2.3 - Prob. 10PSCh. 2.3 - Prob. 11PSCh. 2.3 - Prob. 12PSCh. 2.3 - Prob. 13PSCh. 2.3 - Prob. 14PSCh. 2.3 - Prob. 15PSCh. 2.3 - Prob. 16PSCh. 2.3 - Prob. 17PSCh. 2.3 - Prob. 18PSCh. 2.3 - Prob. 19PSCh. 2.3 - Prob. 20PSCh. 2.3 - Prob. 21PSCh. 2.3 - Prob. 22PSCh. 2.3 - Prob. 23PSCh. 2.3 - Prob. 24PSCh. 2.3 - Prob. 25PSCh. 2.3 - Prob. 26PSCh. 2.3 - Prob. 27PSCh. 2.3 - Prob. 28PSCh. 2.3 - Prob. 29PSCh. 2.3 - Prob. 30PSCh. 2.3 - Prob. 31PSCh. 2.3 - Prob. 32PSCh. 2.3 - Prob. 33PSCh. 2.3 - Prob. 34PSCh. 2.3 - Prob. 35PSCh. 2.3 - Draw a Venn diagram showing the relationship among...Ch. 2.3 - Prob. 37PSCh. 2.3 - Prob. 38PSCh. 2.3 - In Problems 3944, use set notation to identify the...Ch. 2.3 - In Problems 3944, use set notation to identify the...Ch. 2.3 - In Problems 3944, use set notation to identify the...Ch. 2.3 - Prob. 42PSCh. 2.3 - Prob. 43PSCh. 2.3 - Prob. 44PSCh. 2.3 - Prob. 45PSCh. 2.3 - Prob. 46PSCh. 2.3 - Prob. 47PSCh. 2.3 - Prob. 48PSCh. 2.3 - Prob. 49PSCh. 2.3 - Prob. 50PSCh. 2.3 - In a recent survey of 100 persons, the following...Ch. 2.3 - Matt E. Matic was applying for a job. To determine...Ch. 2.3 - A poll was taken of 100 students at a commuter...Ch. 2.3 - Prob. 54PSCh. 2.3 - Prob. 55PSCh. 2.3 - Prob. 56PSCh. 2.3 - The Venn diagram in Figure 2.17 shows five sets....Ch. 2.3 - Prob. 58PSCh. 2.3 - Prob. 59PSCh. 2.3 - Human blood is typed Rh + positive blood of Rh ...Ch. 2.4 - IN YOUR OWN WORDS Why do you think the fundamental...Ch. 2.4 - Prob. 2PSCh. 2.4 - Prob. 3PSCh. 2.4 - Prob. 4PSCh. 2.4 - Prob. 5PSCh. 2.4 - Prob. 6PSCh. 2.4 - Prob. 7PSCh. 2.4 - Prob. 8PSCh. 2.4 - Prob. 9PSCh. 2.4 - Prob. 10PSCh. 2.4 - Prob. 11PSCh. 2.4 - Prob. 12PSCh. 2.4 - Prob. 13PSCh. 2.4 - Prob. 14PSCh. 2.4 - Prob. 15PSCh. 2.4 - Prob. 16PSCh. 2.4 - Prob. 17PSCh. 2.4 - Prob. 18PSCh. 2.4 - Prob. 19PSCh. 2.4 - Prob. 20PSCh. 2.4 - Prob. 21PSCh. 2.4 - Prob. 22PSCh. 2.4 - Prob. 23PSCh. 2.4 - Prob. 24PSCh. 2.4 - Prob. 25PSCh. 2.4 - Prob. 26PSCh. 2.4 - Prob. 27PSCh. 2.4 - Prob. 28PSCh. 2.4 - Prob. 29PSCh. 2.4 - Show that the following sets have the same...Ch. 2.4 - Prob. 31PSCh. 2.4 - Prob. 32PSCh. 2.4 - Prob. 33PSCh. 2.4 - Prob. 34PSCh. 2.4 - Prob. 35PSCh. 2.4 - Prob. 36PSCh. 2.4 - Prob. 37PSCh. 2.4 - Prob. 38PSCh. 2.4 - Prob. 39PSCh. 2.4 - Prob. 40PSCh. 2.4 - Prob. 41PSCh. 2.4 - Prob. 42PSCh. 2.4 - Prob. 43PSCh. 2.4 - Prob. 44PSCh. 2.4 - Prob. 45PSCh. 2.4 - Prob. 46PSCh. 2.4 - Prob. 47PSCh. 2.4 - Prob. 48PSCh. 2.4 - Prob. 49PSCh. 2.4 - Prob. 50PSCh. 2.4 - Prob. 51PSCh. 2.4 - Prob. 52PSCh. 2.4 - Prob. 53PSCh. 2.4 - Prob. 54PSCh. 2.4 - Prob. 55PSCh. 2.4 - Prob. 56PSCh. 2.4 - Prob. 57PSCh. 2.4 - Prob. 58PSCh. 2.4 - Prob. 59PSCh. 2.4 - Prob. 60PSCh. 2.CR - Prob. 1CRCh. 2.CR - Prob. 2CRCh. 2.CR - Prob. 3CRCh. 2.CR - Prob. 4CRCh. 2.CR - Prob. 5CRCh. 2.CR - Prob. 6CRCh. 2.CR - Prob. 7CRCh. 2.CR - Prob. 8CRCh. 2.CR - Prob. 9CRCh. 2.CR - Prob. 10CRCh. 2.CR - Prob. 11CRCh. 2.CR - Prob. 12CRCh. 2.CR - Prob. 13CRCh. 2.CR - Prob. 14CRCh. 2.CR - Prob. 15CRCh. 2.CR - Prob. 16CRCh. 2.CR - Prob. 17CRCh. 2.CR - Human blood is typed Rh+ positive blood or Rh...Ch. 2.CR - Prob. 19CRCh. 2.CR - Prob. 20CR
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