Practical Business Math Procedures
12th Edition
ISBN: 9781259540554
Author: Jeffrey Slater, Sharon Wittry
Publisher: McGraw-Hill Education
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Chapter 20, Problem 5PT
To determine
The Charles’s cost for the 9-month coverage.
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Q3. The distribution for the working lifetime of light bulbs, manufactured in a company, is found to be
normally distributed with a mean of 1450 hours and a standard deviation of 60 hours.
a) In this distribution, find the life time of a lightbulb whose z-score is -1.8?
b) Which percentage of lightbulbs have life time less than 1400 hours?
c) Which percentage of lightbulbs have life time greater than 1500 hours?
d) Which percentage of lightbulbs have life time between 1420 to 1500 hours?
Q4. Considering the following two normal distributions A and B, which statement (or statements) is correct?
a) Mode of the distribution A is larger than that of distribution B.
b) SD of the distribution B is larger than that of distribution A.
c) Mean of the distribution A is smaller than that of distribution B.
d) A data item with z-score of -1 falls between 20 to 30 in distribution A.
e) A data item with z-score of +1 falls between 10 to 20 in distribution B.
A
0
10
20
30
40
40
50
60
00
10
70
B
80
90
100
Q1. A traffic camera recorded number of red cars going through the intersection at 16th Ave N and Centre St.
each day over 7 days was:
32
30
24 30
36
38
27
a) Calculate the mean, mode, range and median of the data set above.
c) Calculate the standard deviation of this data set.
S
Chapter 20 Solutions
Practical Business Math Procedures
Ch. 20.1 - Bill Boot, age 39, purchased a $60,000, 5-year...Ch. 20.1 - Prob. 2PQCh. 20.1 - Prob. 1EPQCh. 20.1 - Prob. 2EPQCh. 20.1 - Use the table in the Business Math Handbook to...Ch. 20.1 - Prob. 2AHCh. 20.1 - Prob. 3AHCh. 20.1 - Prob. 4AHCh. 20.1 - Prob. 5AHCh. 20.1 - Prob. 6AH
Ch. 20.1 - If Gary Thomas decides to cash in his $45,000...Ch. 20.1 - Prob. 8AHCh. 20.1 - Prob. 9AHCh. 20.1 - Prob. 10AHCh. 20.1 - Prob. 11AHCh. 20.2 - Prob. 1PQCh. 20.2 - Prob. 2PQCh. 20.2 - Prob. 3PQCh. 20.2 - Prob. 1EPQCh. 20.2 - Prob. 2EPQCh. 20.2 - Prob. 3EPQCh. 20.2 - Prob. 1AHCh. 20.2 - Prob. 2AHCh. 20.2 - Prob. 3AHCh. 20.2 - Prob. 4AHCh. 20.2 - Prob. 5AHCh. 20.2 - Prob. 6AHCh. 20.2 - Prob. 7AHCh. 20.2 - Prob. 8AHCh. 20.2 - Prob. 9AHCh. 20.2 - Prob. 10AHCh. 20.2 - Prob. 11AHCh. 20.3 - Calculate the annual auto premium for Mel Jones...Ch. 20.3 - Prob. 2PQCh. 20.3 - Prob. 1EPQCh. 20.3 - Prob. 2EPQCh. 20.3 - Prob. 1AHCh. 20.3 - Prob. 2AHCh. 20.3 - Prob. 3AHCh. 20.3 - Prob. 4AHCh. 20.3 - Prob. 5AHCh. 20.3 - Prob. 6AHCh. 20.3 - Prob. 7AHCh. 20.3 - Prob. 8AHCh. 20.3 - Prob. 9AHCh. 20.3 - Prob. 10AHCh. 20.3 - Prob. 11AHCh. 20.3 - Prob. 12AHCh. 20.3 - Prob. 13AHCh. 20.3 - Prob. 14AHCh. 20.3 - Prob. 15AHCh. 20.3 - Prob. 16AHCh. 20 - Prob. 1ECPCh. 20 - Prob. 2ECPCh. 20 - Prob. 3ECPCh. 20 - Prob. 4ECPCh. 20 - Prob. 5ECPCh. 20 - Prob. 6ECPCh. 20 - Prob. 7ECPCh. 20 - Calculate the total cost of a fire insurance...Ch. 20 - Prob. 9ECPCh. 20 - Prob. 10ECPCh. 20 - Prob. 11ECPCh. 20 - Prob. 12ECPCh. 20 - Calculate the annual auto insurance premium for...Ch. 20 - Prob. 14ECPCh. 20 - Prob. 15ECPCh. 20 - Prob. 16ECPCh. 20 - Prob. 17ECPCh. 20 - Prob. 18ECPCh. 20 - Prob. 19ECPCh. 20 - Prob. 20ECPCh. 20 - Prob. 21ECPCh. 20 - Prob. 22ECPCh. 20 - Prob. 23ECPCh. 20 - Prob. 24ECPCh. 20 - Prob. 25ECPCh. 20 - Prob. 26ECPCh. 20 - Marika Katz bought a new Blazer and insured it...Ch. 20 - Prob. 28ECPCh. 20 - Prob. 29ECPCh. 20 - Prob. 30ECPCh. 20 - Prob. 1PTCh. 20 - Prob. 2PTCh. 20 - Prob. 3PTCh. 20 - Prob. 4PTCh. 20 - Prob. 5PTCh. 20 - Prob. 6PT
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- Q2. Government of Canada is designing Registered Retirement Saving Plans (RRSP) for Canadians. According to statistics Canada, the life expectancy in Canada is 86 years with standard deviation of 4.8 years. a) Find the z-score of a person who is 90 years old? b) Find the age of a person whose z-score is -1.4? c) What percent of people age higher than 80? d) What percent of people age less than 83? e) What percent of people age between 85 and 88?arrow_forwardSafari File Edit View History Bookmarks Window Help Ο Ω OV O mA 0 mW ర Fri Apr 4 1 222 tv A F9 F10 DII 4 F6 F7 F8 7 29 8 00 W E R T Y U S D பட 9 O G H J K E F11 + 11 F12 O P } [arrow_forwardSo confused. Step by step instructions pleasearrow_forward
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