Statistics for Engineers and Scientists
4th Edition
ISBN: 9780073401331
Author: William Navidi Prof.
Publisher: McGraw-Hill Education
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Chapter 10.2, Problem 8E
a.
To determine
Obtain the
Check whether or not the variance is under control, recompute
b.
To determine
Obtain the
Check whether or not the process mean is in control, otherwise detect the sample at which the process is out of control.
c.
To determine
Check whether or not the process mean is in control, otherwise detect the sample at which the process is out of control based on Western Electric rules.
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Match the definition in column X with the correct term in column Y.
Two marks will be awarded for each correct answer.
(20)
COLUMN X
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COLUMN Y
Condenses sample data into a few summary
A.
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measures
Q.1.2.2
The collection of all possible observations that
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B.
Descriptive statistics
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Ordinal-scaled data
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D.
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A set of mathematically based tools &
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The following table indicates the unit prices (in Rands) and quantities of three consumer products
to be held in a supermarket warehouse in Lenasia over the time period from April to July 2025.
APRIL 2025
JULY 2025
PRODUCT
Unit Price (po)
Quantity (q0))
Unit Price (p₁)
Quantity (q1)
Mineral Water
R23.70
403
R25.70
423
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922
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R106.50
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The Independent Institute of Education (Pty) Ltd 2025
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The following table indicates the unit prices (in Rands) and quantities of three meals sold every year
by a small restaurant over the years 2023 and 2025.
2023
2025
MEAL
Unit Price (po) Quantity (q0))
Unit Price (P₁)
Quantity (q₁)
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R145
1125
Pizza
R110
2115
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Pasta
R95
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Using 2023 as the base year, compute the individual price relatives in 2025 for (10)
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0.2.2
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Chapter 10 Solutions
Statistics for Engineers and Scientists
Ch. 10.1 - Indicate whether each of the following quality...Ch. 10.1 - True or false: a. Control charts are used to...Ch. 10.1 - Prob. 3ECh. 10.1 - Prob. 4ECh. 10.1 - True or false: a. When a process is in a stale of...Ch. 10.1 - Prob. 6ECh. 10.2 - The quality-control plan for a certain production...Ch. 10.2 - The following X chart depicts the last 50 samples...Ch. 10.2 - The thickness, in mm, of metal washers is measured...Ch. 10.2 - Repeat Exercise 3, using the S chart in place of...
Ch. 10.2 - A process has mean 12 and standard deviation 3....Ch. 10.2 - A process has mean 8 and standard deviation 2. The...Ch. 10.2 - A process is monitored by taking samples at...Ch. 10.2 - Prob. 8ECh. 10.2 - Repeat Exercise 8, using the S chart in place of...Ch. 10.2 - Prob. 10ECh. 10.2 - Repeat Exercise 10, using the S chart in place of...Ch. 10.2 - Copper wires are coated with a thin plastic...Ch. 10.2 - Repeat Exercise 12, using the S chart in place of...Ch. 10.3 - Prob. 1ECh. 10.3 - The target fill weight for a box of cereal is 350...Ch. 10.3 - Prob. 3ECh. 10.3 - Refer to Exercise 3. In the last 50 samples, there...Ch. 10.3 - A newly designed quality-control program for a...Ch. 10.3 - Prob. 6ECh. 10.3 - Prob. 7ECh. 10.3 - Each hour, a 10 m2 section of fabric is inspected...Ch. 10.4 - Refer to Exercise 3 in Section 10.2. a. Delete any...Ch. 10.4 - Refer to Exercise 8 in Section 10.2. a. Delete any...Ch. 10.4 - Prob. 3ECh. 10.4 - Refer to Exercise 12 in Section 10.2.ss a. Delete...Ch. 10.4 - Prob. 5ECh. 10.4 - Prob. 6ECh. 10.5 - The thickness specification for aluminum sheets is...Ch. 10.5 - The specification for the diameters of ball...Ch. 10.5 - Refer to Exercise 2. a. To what value should the...Ch. 10.5 - Refer to Exercise 1. a. To what value should the...Ch. 10.5 - A process has a process capability index of Cp =...Ch. 10 - Prob. 1SECh. 10 - Prob. 2SECh. 10 - Prob. 3SECh. 10 - Prob. 4SECh. 10 - Prob. 5SECh. 10 - Prob. 6SECh. 10 - To set up a p chart to monitor a process that...
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