Quiz 2
Chapters 4 & 5__TEAM A week 5________________________
1) Use the standard normal distribution to find P(2.25 < z < 1.25). A) .0122B) .8821C) .8944D) .4878
P(2.25 < z < 1.25) = F(1.25)  (1  F(2.25)) = 0.89435  (1  0.987776) = 0.882126
2) Before a new phone system was installed, the amount a company spent on personal calls followed a normal distribution with an average of $ 900 per month and a standard deviation of $50 per month. Refer to such expenses as PCE's (personal call expenses). Using the distribution above, a. what is the probability that during a randomly selected month PCE's were between $775.00 and $990.00? A) .0421B) .0001C) .9999D) .9579
b. what is the probability that during a randomly selected month PCE's were between $375.00 and $590.00? A) .9579B) .9999C) 2.82316E10D) .0421
c Find the point in the distribution below which 2.5% of the PCE's fell. A) $ 682.50B) $ 602.00C) $ 802.00D) $ 17.50
3) The diameters of ball bearings produced in a manufacturing process can be described using a uniform distribution over the interval 2.5 to 4.5 millimeters. What is the probability that a randomly selected ball bearing has a diameter greater than 3.2 millimeters? A) 1.5B) 0.4571C) 0.7111D) 0.65
4) A machine is set to pump cleanser into a process at the rate of 9 gallons per minute. Upon inspection, it is learned that the machine actually pumps cleanser at a rate described by the uniform distribution over the interval 8.5 to 12.5 gallons per minute.
a. What is the probability that at the time the machine is checked it is pumping more than 10.5 gallons per minute?
A) .50B) .25C) .7692D) .667
b. What is the probability that at the time the machine is checked it is pumping more than 9.0 gallons per minute? A) .7692B) .25C) .50D) .875
c. What is the probability that at the time the machine is checked it is pumping between 9.5and 10.5 gallons per minute?
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An important part of decision making is having a clear understanding of the information used to base decisions from. Charts can be valuable when a need to represent numerical data would benefit communicating information visually. Some of the most important aspects of a good chart are to select the right type of chart (or graph) that can best characterize the data, also, to keep the design simple in order for an audience to...
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Attributes

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Variable Control Charts
Use actual measurements for charting
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Statistical Analysis and Application of Charts
Presented To: Mam Ayesha IftikharPresented By: Hassan Bashir
Roll Number: bba02141016
Program : BBA
Semester : 2nd
Date: 19Oct2014
Research Questionnaire/ Objective:
Analysis of quantitative and qualitative data
Uses of appropriate charts under the specific/general scenario.
To ensure that statistical tools are the important for decision making.
Type of Data:
Quantitative Data
Qualitative data...
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...Timeless Business Charts
Copyright 2013 Vishnuvarthanan Moorthy
Data speaks thousand words and Charts speak more than that! Are you one among them who are
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