• When the hypothesis produces a left tailed graph, which statement is true about the null hypothesis.
• A poll found that 41% of male voters and 44% of female voters support a particular candidate. To test whether this candidate has equal levels of support between male and female voters, the null hypothesis should be
• At a certain university, the average cost of books was $340 per student last semester and the population standard deviation was $90. This semester a sample of 45 students revealed an average cost of books of $370 per students. The Dean Of Students believes that the costs are greater this semester. What is the test value for this hypothesis?