# Finding probabilities from a given data set

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Please answer the following probabilities from the data set below using Excel. Also please add them to the chart, Thanks.

https://mycampus.aiu-online.com/courses/QMB350/Assignment_Assets/DataSetandDataSetKey_0703A.xls

? What is the gender distribution (% females and % males)?

? What is the "tenure with company" distribution by gender?

? What % of the survey participants are in each department?

? What is the mean overall satisfaction by gender?

? If we choose a person at random from this database:

o What is the probability that this person will be between 22 and 49 years old?

o What is the probability that their overall job satisfaction is 4.7 or lower?

o What is the probability that this person will be a male in the information technology department?

o What is the probability that this person will be an hourly employee whose intrinsic satisfaction is 6 or more?

For the mean overall by gender, compute the mean of overall for each gender.

. Include all pertinent info in one document to be read. But you can submit additional information such as an Excel spreadsheet but will only be looked at if I don't understand something and may not be looked at all.. Let's say that I go to a very large shopping mall and take a random sample of 29 cars from the parking lot. Provide all of the at random probabilities. Include the following summary table.

Count Probability

1) Male Dist.

Female Dist.

2) M Tenure< 2

2<M Tenure<5

M Tenure>5

F Tenure< 2

2<F Tenure<5

F Tenure>5

3) HR

IT

AD

4) Male Mean

Female Mean

Count Probability

5) between 22 and 49

4.7 or lower

Male in IT

Hourly Int>=6

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##### Solution Summary

The solution contains detailed explanation of finding probabilities from a given data set.

###### 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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