Refer to Problem 5. Determine the probability of making a Type II error if the true population proportion is 0.63. Assume the test is conducted at the a = 0.05 level of significance. What is the power of the test?

Data from problem 5

In many parliamentary procedures, a supermajority is defined as an excess of 60% of voting members. In a poll conducted by the Gallup organization on May 10, 1939, 1561 adult Americans were asked, “Do you think the United States will have to fight Japan within your lifetime?” Of the 1561 respondents, 954 said no. Does this constitute sufficient evidence that a supermajority of Americans did not feel the United States would have to fight Japan within their lifetimes?