A Study was conducted to investigate the Time some people spend in Social media site

INSTRUCTIONS TO CANDIDATES

• A file named “Assignment Data Sets”, containing the data sets for the following questions, can be downloaded from the e-learning site vUWS. You should find and download the data set your group has been allocated (eg data set 182).

• You should use Excel to carry out all calculations and statistical analyses. To get started with Excel, see the instructions on page 13 of the textbook.

• To complete this assignment, you must provide the Excel outputs for each of the questions in a report.

• Your assignment submitted must be typed and word-processed.

• The maximum number of pages for each submission is six (6), not including the cover page. No mark will be given if the number of pages exceeds the limit.

• The assignment is to be submitted online by the team leader before 5pm, 26^th January 2019

• Any late assignments will be penalised 10% of the total mark per day

QUESTION 1               (3 marks)

Calculate a 95% confidence interval for the unknown population mean of Time people spend in social media site.

QUESTION 2               (4 marks)

Test, at the 5% level of significance, whether the average yearly expenditure is different than A$ 40 000?

QUESTION 3               (4 marks)

Test, at 1% level of significance, whether the average Expenditure is different for male and female

[You may assume that the unknown population standard deviations for expenditure is equal]

QUESTION 4               (4 marks)

Test, at the 5% level of significance, whether a person gender is associated to the type of mobile phone owned.

NOTE:             The data was randomly created for the sole purpose of this assignment.

The data can be assumed to be normally distributed for all continuous variables

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