10] X 10 Suppose you are interested in conducting the statistical test of HO: mu = 320 against Ha: mu > 320, where mu is the mean of the population. Suppose you have decided to use the following decision rule: Reject HO if the sample mean of a random sample of 100 items is more than 336. Assume that the standard deviation of the population is 80. Find the probability of making a Type I error, by using this decision rule. 0.0228 O 0.4699 O 0.4772 O 0.0301 D aja 11 Consider the test of hypothesis HO: mu=1200 against the alternative Ha: mu 1.96 O T> 2.24 O T 2.575 orT 2.325 or T 1.96 or T