please help

You are testing a hypothesis about some population mean. Which of the following is true? O a. If you make a type | error, it is impossible to also make a type II error (and vice versa). O b. If you specify the probability of a type I error as 0.05, then the probability of a type II error will certainly be greater than 0.05, c. Suppose your alternative hypothesis is that the population mean is greater than 30. You collect a random sample of size n, and you find a sample mean of 32. Your friend collects another random sample, also of sizelo, and she finds a sample mean of 33. If your sample is significant at the 50% level, then your friend's sample will certainly be significant at the 59% level as well. O d. None of these choices are true