(d) On what percentage of days do they get more than 140 pieces of mail? Draw a diag showing the number of pieces of mail and shade the appropriate area on the diagram.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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Question 2:
The number of pieces of mail received daily at the school office is normally distributed with mean
µ = 100.33 pieces per day and standard deviation o = 25.55 pieces per day.
Use the 68-95-99.7 Rule to compute the values in Parts (a) and (b).
(a) Between what two values do the middle 95% of daily mail delivery amounts fall?
(b) Give the value such that only 2.5% of days have more mail delivery than that day's value.
Use Table Z to answer the following questions.
(c) On what percentage of days do they get less than 65 pieces of mail?
(d) On what percentage of days
140 pieces of ma
Draw a diagram
they get more
showing the number of pieces of mail and shade the appropriate area on the diagram.
Transcribed Image Text:Question 2: The number of pieces of mail received daily at the school office is normally distributed with mean µ = 100.33 pieces per day and standard deviation o = 25.55 pieces per day. Use the 68-95-99.7 Rule to compute the values in Parts (a) and (b). (a) Between what two values do the middle 95% of daily mail delivery amounts fall? (b) Give the value such that only 2.5% of days have more mail delivery than that day's value. Use Table Z to answer the following questions. (c) On what percentage of days do they get less than 65 pieces of mail? (d) On what percentage of days 140 pieces of ma Draw a diagram they get more showing the number of pieces of mail and shade the appropriate area on the diagram.
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