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BSB123 Tutorial 10 - Hypothesis testing part 2

# BSB123 Tutorial 10 - Hypothesis testing part 2 - Tutorial...

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Tutorial 10: Hypothesis testing part 2 Reading Topic* Chapter Sections Page 10 10 10.1 10.3 10.4 312 - 343 Section A (Attempt before tutorial - Solutions provided on Blackboard) Problems 10.4 – 10.6 page 322 Problem 10.12 page 323 Problem 10.27 page 337 Problem 10.38(a), (c) & (d) page 338 Problem 10.43 page 344 Section B (Worked through in class - Solutions provided in class) Problem 10.11 page 323 A consumer organisation is concerned about the increase in the level of credit card debt of young customers. It commissions two surveys, in October 2004 and October 2008, of 1,000 consumers aged 18 – 24 years old. These show an average credit card debt of \$5,800 in October 2004 with a standard deviation of \$960 compared with an average of \$6,320 in October 2008 with a standard deviation of \$941. (a) Assuming that the population variances from both years are equal, is there evidence that the mean credit card debt is higher in October 2008 than in October 2004? (Use the α = 0.05 level of significance). (b) Find the p -value in (a) and interpret its meaning.

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BSB123 Tutorial 10 - Hypothesis testing part 2 - Tutorial...

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