1. The data that follow are the square footage (in 1,000 feet squared) of 28 homes.

1.5	2.4	3.6	2.6	1.6	2.4	2.0
3.5	2.5	1.8	2.4	2.5	3.5	4.0
2.6	1.6	2.2	1.8	3.8	2.5	1.5
2.8	1.8	4.5	1.9	1.9	3.1	1.6

The sample mean = 2.50 and the sample standard deviation = 0.8302.

The distribution can be written asX~U(1.5, 4.5).

What isP(x < 3.5|x< 4)?

2. The table shows the political party affiliation of each of 67 members of the US Senate in June 2012, and when they are up for reelection.

Up for reelection:	Democratic party	Republican party	Other	Total
November 2014	20	13	0
November 2016	10	24	0
Total

The events "Other" and "Up for reelection in November 2016" are ________

a. mutually exclusive

b. independent

c. both mutually exclusive and independent.

d. neither mutually exclusive nor independent