1. A survey of U.S. adults ages 18 and older asked about their use of social media. One analysis examined the relationship between Instagram usage and age. Here are the data:

	Age
Instagram use	18-24	25-34	35-44	45-54	55-64	65 and older
Yes	228	323	184	114	65	42
No	32	28	35	83	127	189

For the survey respondents:

1. What is the probability that a randomly chosen respondent uses Instagram? (2p)

2. What is the conditional probability a randomly chosen respondent uses Instagram, given the persons age is between 25 and 34 years? (4p)

3. What is the conditional probability a randomly chosen respondent is between 35 and 44 years old, given that the person uses Instagram? (4p)