0-0.9 40 1.0-1.9 19 2.0-2.9 15 3.0-3.9 20 4.0-4.9 12 5.0-5.9 11

Functions and Change: A Modeling Approach to College Algebra (MindTap Course List)
6th Edition
ISBN:9781337111348
Author:Bruce Crauder, Benny Evans, Alan Noell
Publisher:Bruce Crauder, Benny Evans, Alan Noell
Chapter5: A Survey Of Other Common Functions
Section5.3: Modeling Data With Power Functions
Problem 6E: Urban Travel Times Population of cities and driving times are related, as shown in the accompanying...
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Time to review: The following table presents the time taken to review articles that were submitted for publication to a particular
journal during a recent year. A few articles took longer than months to review; these are omitted from the table. Consider the
data to be a population.
Time (Months)
Number of Articles
0-0.9
40
1.0-1.9
19
2.0-2.9
15
3.0- 3.9
20
4.0-4.9
12
5.0- 5.9
11
Send data to Excel
(a) Approximate the variance of the times. Round the answer to at least two decimal places.
The variance is
(b) Approximate the standard deviation of the times. Round the answer to at least two
decimal places.
The standard deviation is
Transcribed Image Text:Time to review: The following table presents the time taken to review articles that were submitted for publication to a particular journal during a recent year. A few articles took longer than months to review; these are omitted from the table. Consider the data to be a population. Time (Months) Number of Articles 0-0.9 40 1.0-1.9 19 2.0-2.9 15 3.0- 3.9 20 4.0-4.9 12 5.0- 5.9 11 Send data to Excel (a) Approximate the variance of the times. Round the answer to at least two decimal places. The variance is (b) Approximate the standard deviation of the times. Round the answer to at least two decimal places. The standard deviation is
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