Multiple choice, Thanks

1) Two paired or matched samples would imply that:

two data values are collected from the same source (elements) for two dependent samples

• data are collected on one variable from the elements of two independent samples
• two data values are collected from the same source (elements) for two independent samples
• data are collected on two variables from the elements of two independent samples

2) A qualitative variable is the only type of variable that:

• can assume numerical values
• can assume an uncountable set of values
• cannot be graphed
• cannot be measured numerically

3) What is the critical value of z for the hypothesis test?

• -2.17
• -1.96
• -2.05
• -2.33