A hotel chain wants to learn about the level of experience of its general managers. A random sample of 40 general managers is taken and their experience (in number of years) is recorded. The information is summarised in the following frequency table: Experience (years) Frequency (f�) Midpoint 5,5−8,55,5−8,5 33 77 8,5−11,58,5−11,5 55 1010 11,5−14,511,5−14,5 66 1313 14,5−17,514,5−17,5 1212 1616 17,5−20,517,5−20,5 1010 1919 20,5−23,520,5−23,5 44 2222 The best estimate of the mean number of years of experience, rounded to two decimal places, is Select one: a. 15,4815,48. b. 17,9517,95. c. 7,117,11. d. 4,244,24.
A hotel chain wants to learn about the level of experience of its general managers. A random sample of 40 general managers is taken and their experience (in number of years) is recorded. The information is summarised in the following frequency table: Experience (years) Frequency (f�) Midpoint 5,5−8,55,5−8,5 33 77 8,5−11,58,5−11,5 55 1010 11,5−14,511,5−14,5 66 1313 14,5−17,514,5−17,5 1212 1616 17,5−20,517,5−20,5 1010 1919 20,5−23,520,5−23,5 44 2222 The best estimate of the mean number of years of experience, rounded to two decimal places, is Select one: a. 15,4815,48. b. 17,9517,95. c. 7,117,11. d. 4,244,24.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 42PFA
Question
A hotel chain wants to learn about the level of experience of its general managers. A random sample of 40 general managers is taken and their experience (in number of years) is recorded. The information is summarised in the following frequency table:
Experience (years) |
Frequency (f�) |
Midpoint |
5,5−8,55,5−8,5 | 33 | 77 |
8,5−11,58,5−11,5 | 55 | 1010 |
11,5−14,511,5−14,5 | 66 | 1313 |
14,5−17,514,5−17,5 | 1212 | 1616 |
17,5−20,517,5−20,5 | 1010 | 1919 |
20,5−23,520,5−23,5 | 44 | 2222 |
The best estimate of the mean number of years of experience, rounded to two decimal places, is
Select one:
a.
15,4815,48.
b.
17,9517,95.
c.
7,117,11.
d.
4,244,24.
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