تم الحل ✓
categoryإحصاء
schoolبكالوريوس
event_available2026-07-13
السؤال
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Homework-Chapter 3.
Question #2
Student name
The amount of time it takes to recover
physiologically from a certain kind of sudden
noise is found to be normally distributed with a
mean of 80 seconds and a standard deviation of
10 seconds. Using the 50%-34% -14% figure
(given here), compute the following:
34% 34%
14%
149
(A) Approximate percentages for the recovery time. (Hint: Compute Z scores first, then
the percentage). Put details of your computations on this sheet. Round to 2 decimals.
-Question (a): above 100
-Question (b): below 100
-Question (c): above 80
-Question (d): below 80
-Question (e): above 60)
-Question (f): below 60
2
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