Mean Std. dev. Result reater/Less/Betwee Answer Q 11 50 4 44 50 4 55 Between 44-55 Q12 50 4 55 Greater than 55 Q13 50 4 52 50 4 55 Between 52-55 Q14 3401 82.5 3500 11.51% More than 3500 0.1151 Q15 3401 82.5 3500 98.45% 3401 82.5 3579 88.49% Between 3500-3579 9.96% Q16 3401 82.5 3325 98.45% 3401 82.5 3579 17.85% Between 3325-3579 80.60% Q17 15 3.5 20 92.34% More than 20 7.66% Q18 15 3.5 20 92.34% Less than 20 92.34% Q19 15 3.5 10 19.57% 15 3.5 12 7.66% Between 10-12 11.91%
Mean Std. dev. Result reater/Less/Betwee Answer Q 11 50 4 44 50 4 55 Between 44-55 Q12 50 4 55 Greater than 55 Q13 50 4 52 50 4 55 Between 52-55 Q14 3401 82.5 3500 11.51% More than 3500 0.1151 Q15 3401 82.5 3500 98.45% 3401 82.5 3579 88.49% Between 3500-3579 9.96% Q16 3401 82.5 3325 98.45% 3401 82.5 3579 17.85% Between 3325-3579 80.60% Q17 15 3.5 20 92.34% More than 20 7.66% Q18 15 3.5 20 92.34% Less than 20 92.34% Q19 15 3.5 10 19.57% 15 3.5 12 7.66% Between 10-12 11.91%
College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter4: Polynomial And Rational Functions
Section4.6: Rational Functions
Problem 11SC: Find the mean hourly cost when the cell phone described above is used for 240 minutes.
Related questions
Question
In order to find probability, you can use this formula in Microsoft Excel:
The best way to understand and solve these problems is by first drawing a bell curve and
marking key points such as x, the mean, and the areas of interest. Once marked on the bell
curve, figure out what calculations are needed to find the area of interest.
=NORM.DIST(x, Mean, Standard Dev., TRUE).
When the question mentions “greater than” you may have to subtract your answer from 1.
When the question mentions “between (two values)”, you need to do separate calculation for
both values and then subtract their results to get the answer.
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