Reference no: EM13626110

1) In a two-tailed hypothesis test, the test statistic is determined to be z = -2.5. The p-value for this test: Why?

a) is 0.0062.

b) is 0.0124.

c) is 0.4938.

d) cannot be determined, since the level of confidence is not given.

2. The table gives beverage preferences for random samples of teens and adults.

Teens Adults Total

Coffee	50	200	250
Tea	100	150	250
Soft Drink	200	200	400
Other	50	50	100
Total	400	600	1000

We are asked to test for independence between age (ie adult and teen) and drink preference.

The expected number of adults who prefer coffee is:

a) 0.25

b) 0.33

c) 150

d) 200