length of time to play a game has a standard deviation of 10 minutes or less. Write sentences describing type I and type II errors for a hypothesis test of this claim.

4

For a one-tailed hypothesis test (upper tail) the p-value is computed to be 0.008. If the test is being conducted at 99% confidence, the null hypothesis     could be rejected or not rejected depending on the sample size     could be rejected or not rejected depending on the value of the mean of the sample     is not rejected     is rejected

A company manager plans to purchase a machine. The company requires a high quality machine. The manager is currently considering two companies that supply this machine. The machine from company A can produce approximately1050 units in average per day, but the standard deviation of this machine is about 250 units per day; while the machine from company B can produce approximately 900 units in average per day, but the standard deviation of this machine is about 100 units per day. Both of these two companies guarantee at least 10 years life. In addition, both prices are similar although machine A is a little bit higher. Price is not the main concern for the manager because both prices are under their budget. However, the manager cannot decide which machine should be purchased, because he is not sure what test he needs to conduct. Can you recommend the manager what test the manager should conduct? Should the manager conduct the test about the difference between two population means or the…