You are testing the null hypothesis p 0.4 and will reject this hypothesis if z is less than -2.15. (Give your answers correct to four decimal places.) (a) If the null hypothesis is true and you...

Extracted text: You are testing the null hypothesis p 0.4 and will reject this hypothesis if z is less than -2.15. (Give your answers correct to four decimal places.) (a) If the null hypothesis is true and you observe z equal to -1.91, which of the following will you do? O correctly fail to reject H. correctly reject Ho commit a type I error commit a type II error (b) What is the significance level for this test? (c) What is the p-value for z = -1.91?