A sample of 900 computer chips revealed that 58X% of the chips fail in the first 1000 hours of their use. The company's promotional literature claimed that 62b% fail in the first 1000 hours of their use. Is there sufficient evidence at the 0.01 level to dispute the company's claim?

Mahnoor randomly selects times to walk into a local restaurant and observe the type of music being played she found that the restaurant was playing country 11 times rock & roll 17 times and blues 8 times use the observed frequencies to create a probability model for the type of music the restaurant is playing the next time mahnoor walks in.