Hello I'm having difficulty solving the following two questions and I need your help!

(Step by step solutions would be very much appreciated if possible)

Use a significance level of 0.05 for each question.

Q1) A certain soft-drink manufacturer claims that its product holds 28% of the market. In a blind taste test, 13 out of 60 people chose this product. Does this test support or refute the soft drink manufacturer's claim? Choose a significance level you feel is appropriate for this situation.

Q2) An insurance company claims that 38% of automobile accidents occur within 5km of home. The company examined 400 recent accidents and found that 120 occurred within 5 km of the driver's home. Does this result support or refute the company's claim? Choose a significance level and justify your choice.