I want an explanation for this example

A newspaper article headline claims that bystanders perform CPR correctly 41% of cases where needed. A healthcare professional believes the percentage is higher. She cites a study of 890 cases in which 396 bystanders performed CPR correctly. Test this hypothesis at the 0.05 significance level.

Round-off your answers correct to 2 decimal places.

a) Find the critical value(s). If there are 2 values (2 -tail test), separate them with a coma.

b) Calculate the test statistic

c) Make a decision.

Type a if you choose to "Reject the null hypothesis"

Type b if you choose to "Fail to reject the null hypothesis.

d) If your decision is incorrect, what type of error would you be committing?(Type 1 or 2)

Type 1 - for Type I error.

Type 2 - for Type 2 error.