Question
In: Statistics and Probability
When do creative people get their best ideas? USA Today did a survey of 966 inventors...
When do creative people get their best ideas? USA Today did a survey of 966 inventors (who hold U.S. patents) and obtained the following information.
| Time of Day When Best Ideas Occur | |
| Time | Number of Inventors |
| 6 A.M.-12 noon 12 noon-6 P.M. 6 P.M.-12 midnight 12 midnight-6 A.M. |
289 130 321 226 |
(a) Assuming that the time interval includes the left limit and all the times up to but not including the right limit, estimate the probability that an inventor has a best idea during each time interval: from 6 A.M. to 12 noon, from 12 noon to 6 P.M., from 6 P.M. to 12 midnight, from 12 midnight to 6 A.M. (Enter your answers to 3 decimal places.)
| 6AM-12PM | 12PM-6PM | 6PM-12AM | 12AM-6AM |
(b) Do the probabilities add up to 1? Why should they?
No, because they do not cover the entire sample space.Yes, because they cover the entire sample space. Yes, because they do not cover the entire sample space.No, because they cover the entire sample space.
What is the sample space in this problem?
12AM-12PM
6AM-6PM
6AM-12AM
the entire day
Solutions
orchestra answered 2 years agoRelated Solutions
When do creative people get their best ideas? USA Today did a survey of 966 inventors...
When do creative people get their best ideas? USA
Today did a survey of 966 inventors (who hold U.S. patents)
and obtained the following information.
Time of Day When Best Ideas
Occur
Time
Number of Inventors
6 A.M.-12 noon
12 noon-6 P.M.
6 P.M.-12 midnight
12 midnight-6 A.M.
290
142
302
232
(a) Assuming that the time interval includes the left limit and
all the times up to but not including the right limit, estimate the
probability that an inventor...
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I did a survey on how times a week people take a shower, this is a...
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The confidence level is 90%
I asked 10 girls from my family in group one.
6,5,4,5,3,6,8,7,5,9.
I asked 10 guys from my family in group two.
7,4,8,5,7,5,6,5,5,4
Group 1
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Standard Deviation:
Group 2
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(___________ , _____________)
DF:
USA Today ran a report about a University of North Carolina poll of 1248 people from...
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H0:
H1:
=
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Test:
Conclusion:
Question 11 (1 point) Saved A USA Today article claims that the proportion of people who...
Question 11 (1 point)
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Hypothesis: p ≥ 0.52, Alternative Hypothesis: p < 0.52. If you
randomly sample 29 people and 17 of them believe that global
warming is a serious issue, what...
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