The following table shows data collected by the advising team at a major university on GPA of students at the end of their sophomore year. The data is broken down by high school they graduated from.

	GPA at the end of college sophomore year
	< 2.0	2.01 to 3.0	> 3.0	Total
Northeast High	15	100	145	260
Southwest High	30	110	125	265
East High	26	125	180	331
North Star	64	135	205	404
Total	135	470	655	1260

1. Given that a student graduated from North Star, what is the probability he/she has a GPA higher than 3.0 at the end of college sophomore year?

a. 0.507

b. 0.844

c. 0.889

d. 0.910

2. What is the probability that a student graduated from Northeast High or has a GPA greater than 3.0?

a. 0.611

b. 0.364

c. 0.481

d. 0.273