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09 What statistical tool is suitable to test whether there is a difference in the average spending on clothing between male and female? Select one: a

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09 What statistical tool is suitable to test whether there is a difference in the average spending on clothing between male and female?

Select one:

a. Chi-Square Test

b. ANOVA

c. Correlation

10 Which of the following corresponds to Type II error in a hypothesis test?

Select one:

a. Not rejecting H0, when H0 is true

b. Rejecting H0, when H0 is false

c. Rejecting H0, when H0 is true

d. Not rejecting H0, when H0 is false

11 Which of the following is a correct statement regarding significance level, α ?

Select one:

a. It is the probability of making Type II error

b. It must be between 0 and 1 and usually closer to 1

c. It can be any positive number

d. It is the probability of making Type I error

12 A survey for analysing consumer behavious includes the following questions:

What is your age?

What is your gender?

What is your status (Single or Married)?

How much you spend on clothing per month (in A$)?

How much you spend on beer per month (in A$)?

Are you willing to pay more for popular brand (Yes or No)?What graphical display is suitable to examine if there is a relationship between spending on clothing and spending on beer?

Select one:

a. Pie chart

b. Scatter plot

c. Segmented bar chart

d. Box plot

13 Which of the following is the correct alternative hypothesis to test if the average spending on clothing is more than $50/week. 

Select one:

a. H1: μ > 50

b. H1: p = 50

c. H1: p > 50

d. H1 > 50

14 A survey for analysing consumer behavious includes the following questions:

What is your age?

What is your gender?

What is your status (Single or Married)?

How much you spend on clothing per month (in A$)?

How much you spend on beer per month (in A$)?

Are you willing to pay more for popular brand (Yes or No)?

How many categorical variables will be resulted from the above survey questions?

Answer: ?