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1) Find all solutions to 2sin(θ)=-√2 on the interval 0≤θ<2π
answer:
2)Find all solutions to 2cos(θ)=-√2 on the interval 0≤θ<2π
Answer:
1) A political candidate has asked you to conduct a poll to determine what percentage of people support her.

If the candidate only wants a 9% margin of error at a 90% confidence level, what size of sample is needed?

Give your answer in whole people.
2)Karen wants to advertise how many chocolate chips are in each Big Chip cookie at her bakery. She randomly selects a sample of 52 cookies and finds that the number of chocolate chips per cookie in the sample has a mean of 5.3 and a standard deviation of 2.7. What is the 80% confidence interval for the number of chocolate chips per cookie for Big Chip cookies? Enter your answers accurate to one decimal place (because the sample statistics are reported accurate to one decimal place).