What is the average age of the Australian population

Assignment Help Applied Statistics

Reference no: EM132256106

Question 1 - Research Question

The following question involves learning/employing research skills in searching out data on the Internet.

Search the Internet for the latest figures you can find to answer the following questions:

1. What is the average age of the Australian population?

2. What is the average age to die in Australia (for both men and women)?

3. What percentage of people work in Australia?

Question 2- Statistical Decision Making and Quality Control

Show all calculations/reasoning.

(a) A company wishes to set control limits for monitoring the direct labour time to produce an important product. Over the past the mean time has been 30 hours with a standard deviation of 6 hours and is believed to be normally distributed. The company proposes to collect random samples of 64 observations to monitor labour time.

1. If management wishes to establish x-bar control limits covering the 95% confidence interval, calculate the appropriate UCL and LCL.

2. If management wishes to use smaller samples of 9 observations calculate the control limits covering the 95% confidence interval.

(b) Hypothesis testing

The average age of employees at Sturt Ltd is 42. In a retrenchment, 49 persons were laid-off. Their mean age was 45. The Equal Opportunity Commission claimed that Sturt was guilty of age discrimination because it had laid-off older than average workers.

Is the information sufficient evidence to support the claim of age discrimination if σ (sigma) = 10.8 years? Use α = 0.05.

1. Show the null and alternative hypotheses.

2. Calculate the critical value (actual value or Z-value).

3. Sketch the situation, showing the critical value and the reject region (in terms of actual values or Z-values).

4. Explain your conclusion.

Attachment:- Assignment Files.rar

Reference no: EM132256106

Questions Cloud

Range of project outcomes and potential risks : Framework help a team elucidate the range of project outcomes and potential risks?

Identify the major issues and opportunities the company face : Identify economic, legal, and regulatory forces and trends. Critique how well the organization adapts to change.

Draw conclusions on the emerging effects of the programme : BS4D03 - MANAGEMENT PROJECT - University of south wales - evaluation will be to draw conclusions on the emerging effects of the programme, both for operational

Executives to demand millions in monetary compensation : Do you think it's unethical for Executives to demand millions in monetary compensation? Why or why not?

What is the average age of the Australian population : Question 1 - Research Question - What is the average age of the Australian population? What percentage of people work in Australia

Management and leadership : How does "Management and Leadership", "Servant Leadership", "Situational Leadership" and "Crucibles of Leadership" relate to modern organization?

Mobile application that connects aspiring entrepreneurs : Mntrni is a mobile application that connects aspiring entrepreneurs with experienced and successful mentors in lots of different areas and specialties

Develop a succession plan or exit strategy for a business : Develop a succession plan or exit strategy for a business. Discuss the different ways that a business can get more familiar with these regulations.

Define functional versus dysfunctional conflict in work : Define functional versus dysfunctional conflict in a work group and explain how you can increase functional conflict and decrease dysfunctional conflict.

User Account

All Pages