The testing times for a group of college students were normally distributed with a mean of u :31 minutesand a standard deviation of o = 4.8 minutes.The bell curve below represents the distribution for testing times. The scale on the horizontal axis is equalto the standard deviation.Fill in the indicated boxes.H = 314.8O =H-30 u-20 u - oμ+ 20 μ+3σUsed the Empirical Rule to complete the following statements:68% of testing times were betweenminutes andminutes.95% of testing times were betweenminutes andutes.99.7% of testing times were betweenminutes andminutes.50% of testing times were belowminutes.

Given that , μ=31 and σ=4.8 By using the Empirical Rule , 1) 68% of the observation lies within…

The testing times for a group of college students were normally distributed with a mean of u = 31 minutes and a standard deviation of o = 4.8 minutes. The bell curve below represents the distribution for testing times. The scale on the horizontal axis is equal to the standard deviation. Fill in the indicated boxes. µ = 31 o = 4.8 H-30 u-20 u-o μ+20 μ+3σ Used the Empirical Rule to complete the following statements: 68% of testing times were between minutes and minutes. 95% of testing times were between minutes and minutes. 99.7% of testing times were between minutes and minutes. 50% of testing times were below minutes.

The testing times for a group of college students were normally distributed with a mean of u = 31 minutes and a standard deviation of o = 4.8 minutes. The bell curve below represents the distribution for testing times. The scale on the horizontal axis is equal to the standard deviation. Fill in the indicated boxes. µ = 31 o = 4.8 H-30 u-20 u-o μ+20 μ+3σ Used the Empirical Rule to complete the following statements: 68% of testing times were between minutes and minutes. 95% of testing times were between minutes and minutes. 99.7% of testing times were between minutes and minutes. 50% of testing times were below minutes.

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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Question

The testing times for a group of college students were normally distributed with a mean of u :
31 minutes
and a standard deviation of o = 4.8 minutes.
The bell curve below represents the distribution for testing times. The scale on the horizontal axis is equal
to the standard deviation.
Fill in the indicated boxes.
H = 31
4.8
O =
H-30 u-20 u - o
μ+ 20 μ+3σ
Used the Empirical Rule to complete the following statements:
68% of testing times were between
minutes and
minutes.
95% of testing times were between
minutes and
utes.
99.7% of testing times were between
minutes and
minutes.
50% of testing times were below
minutes.

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