Employee retention is a major concern for many companies. A survey of Americans asked how long they have worked for their current employer.† Consider the following example of sample data of 2000 college graduates who graduated five years ago. Time with Current Employer (years) Number 1 508 2 392 3 312 4 220 5 568 Let x be the random variable indicating the number of years the respondent has worked for her/his current employer. (a) Use the data to develop an empirical discrete probability distribution for x. x f(x) 1 2 3 4 5 (b) Show that your probability distribution satisfies the conditions for a valid discrete probability distribution. Since f(x) ? = ≤ ≥ 0 for all values of x and f(x) = , this ---Select--- does does not satisfy the conditions for a valid discrete probability distribution. (c) What is the probability that a respondent has been at her/his current place of employment for more than 3 years?
Employee retention is a major concern for many companies. A survey of Americans asked how long they have worked for their current employer.† Consider the following example of sample data of 2000 college graduates who graduated five years ago. Time with Current Employer (years) Number 1 508 2 392 3 312 4 220 5 568 Let x be the random variable indicating the number of years the respondent has worked for her/his current employer. (a) Use the data to develop an empirical discrete probability distribution for x. x f(x) 1 2 3 4 5 (b) Show that your probability distribution satisfies the conditions for a valid discrete probability distribution. Since f(x) ? = ≤ ≥ 0 for all values of x and f(x) = , this ---Select--- does does not satisfy the conditions for a valid discrete probability distribution. (c) What is the probability that a respondent has been at her/his current place of employment for more than 3 years?
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter12: Probability
Section12.CR: Chapter 12 Review
Problem 13CR
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Question
Employee retention is a major concern for many companies. A survey of Americans asked how long they have worked for their current employer.† Consider the following example of sample data of 2000 college graduates who graduated five years ago.
| Time with Current Employer (years) |
Number |
|---|---|
| 1 | 508 |
| 2 | 392 |
| 3 | 312 |
| 4 | 220 |
| 5 | 568 |
Let x be the random variable indicating the number of years the respondent has worked for her/his current employer.
(a)
Use the data to develop an empirical discrete probability distribution for x.
| x | f(x) |
|---|---|
| 1 | |
| 2 | |
| 3 | |
| 4 | |
| 5 |
(b)
Show that your probability distribution satisfies the conditions for a valid discrete probability distribution.
Since
f(x) = ,
this ---Select--- does does not satisfy the conditions for a valid discrete probability distribution.
f(x) ? = ≤ ≥ 0
for all values of x and
(c)
What is the probability that a respondent has been at her/his current place of employment for more than 3 years?
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