21) For a standard normal distribution, what is the probability that z is greater than 1.75? 22) A null hypothesis makes a claim about a 23) What is the level of significance? 24) Suppose we test the difference between two proportions at the 0.05 level of significance. If the computed z is -1.07, what is our decision? 25) Which of the following conditions must be met to conduct a test for the difference in two sample means? 26) Which of the following statements about the two sample sizes is NOT true? Assume the population standard deviations are equal. 27) What is the chart called when the paired data (the dependent and independent variables) are plotted? 28) What is the variable used to predict the value of another called?
29) Twenty randomly selected statistics students were given 15 multiplechoice questions and 15 open-ended questions, all on the same material. The professor was interested in determining on which type of questions the students scored higher. This experiment is an example of 30) The measurements of weight of 100 units of a product manufactured by two parallel processes have same mean but the standard of process A is 15 while that of B is 7. What can you conclude? ==============================================