Question

1. p-value is the smallest area under the curve in which we would reject the null hypothesis. True or false.

2. For a one tail test, we divide the level of significance (alpha) by 2 to calculate the critical value. True or false.

3. A p-value can be calculated by the area under the curve to the left of Z when Z is less than the mean. True or false.

4. A respondent to a survey indicates that she drives a Ford Taurus. This is an example of qualitative data. True or false.

Answer 1

1. True. If p-value< , then we reject the null hypothesis. This means p-value got the smaller area under the curve.

2. False. For a one tailed test, we do not divide by 2. For a two tailed test, we only divide by 2.

3. True. To calculate probability of Z is less mean. We z-tables which gives us curve of left of Z i.e, cumulative distribution table.

4. True. Because qualitative data are measures of type, say Names or other qualitative information.