The table below gives information, broken down by year in college, about the number of credit hours for which students are enrolled. What is the probability that a student selected at random is a sophomore or is taking between 11 and 13 hours? Round to two decimal places. 14 or more hours 11-13 hours 10 or less hours TOTALS Freshmen 237 377 386 1,000 Sophomores 327 360 423 1,110 Juniors 57 325 162 644 Seniors 114 276 92 482 TOTALS 835 1,338 1,063 3,236
The table below gives information, broken down by year in college, about the number of credit hours for which students are enrolled. What is the probability that a student selected at random is a sophomore or is taking between 11 and 13 hours? Round to two decimal places. 14 or more hours 11-13 hours 10 or less hours TOTALS Freshmen 237 377 386 1,000 Sophomores 327 360 423 1,110 Juniors 57 325 162 644 Seniors 114 276 92 482 TOTALS 835 1,338 1,063 3,236
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 15CR
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Question
The table below gives information, broken down by year in college, about the number of credit hours for which students are enrolled. What is the probability that a student selected at random is a sophomore or is taking between 11 and 13 hours? Round to two decimal places.
|
14 or more hours
|
11-13 hours
|
10 or less hours
|
TOTALS
|
||||
---|---|---|---|---|---|---|---|---|
Freshmen
|
237
|
|
377
|
|
386
|
|
1,000
|
|
Sophomores
|
327
|
|
360
|
|
423
|
|
1,110
|
|
Juniors
|
57
|
|
325
|
|
162
|
|
644
|
|
Seniors
|
114
|
|
276
|
|
92
|
|
482
|
|
TOTALS
|
835
|
|
1,338
|
|
1,063
|
|
3,236
|
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