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In a survey conducted by a union, members were asked to rate the importance of the following issues

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In a survey conducted by a union, members were asked to rate the importance of the following issues: (1) job security, (2)increased fringe benefits, and (3) improved working conditions. Five different responses were allowed for each issue. Among completed surveys, how many different responses to this survey were possible?

Evaluate the given expression.

2?7!

P(5, 3)

In how many ways can an investor select four mutual funds for his investment portfolio from a recommended list of eight mutual funds?

Find the number of distinguishable permutations that can be formed from the letters of the word PHILIPPINES.

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Solution Summary

The rate of importance of issues are examined. The expert examines job security, increased fringe benefits and improved working conditions.

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Q1. In a survey conducted by a union, members were asked to rate the importance of the following issues: (1) job security, (2)increased fringe benefits, and (3) improved working conditions. Five different responses were allowed for each issue. Among completed surveys, how many different responses to this survey were possible?

Solution. Since there are three issues, and five ...

Solution provided by:
Changping Wang, MA
Education
  • BSc , Wuhan Univ. China
  • MA, Shandong Univ.
Recent Feedback
  • "Your solution, looks excellent. I recognize things from previous chapters. I have seen the standard deviation formula you used to get 5.154. I do understand the Central Limit Theorem needs the sample size (n) to be greater than 30, we have 100. I do understand the sample mean(s) of the population will follow a normal distribution, and that CLT states the sample mean of population is the population (mean), we have 143.74. But when and WHY do we use the standard deviation formula where you got 5.154. WHEN & Why use standard deviation of the sample mean. I don't understand, why don't we simply use the "100" I understand that standard deviation is the square root of variance. I do understand that the variance is the square of the differences of each sample data value minus the mean. But somehow, why not use 100, why use standard deviation of sample mean? Please help explain."
  • "excellent work"
  • "Thank you so much for all of your help!!! I will be posting another assignment. Please let me know (once posted), if the credits I'm offering is enough or you ! Thanks again!"
  • "Thank you"
  • "Thank you very much for your valuable time and assistance!"
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