You wish to test to see if the treatments whose code names are given in the chart give immunity that last equally long or not. So, test to see if Ho:1= 2 = 3 =4 vs Hq: not Ho using = .05.

Last semester, Bonnie took a different Biology teacher than her friend Tony. After the final exam, they compared test scores. Bonnie earned an 83 (mean = 75.6, sd = 5), and Tony earned an 87 (mean = 80.3, sd = 7). Who did better? Why?

Several years ago, the Arcadia school system was criticized because the average Arcadia High School graduate could read at only the ninth-grade level.  After this report was made, a special reading program was established to upgrade skills.  The AHS principal wants to know if the reading program worked.  If it has, he will request that an accreditation team visit the school.  If the program has not improved the reading level to at least 10.0 (sophomore level), the administrator would like to avoid the embarrassment of a poor review.  To determine the average reading level of the senior class, we select ten seniors at random.  We assume that reading scores are normally distributed.  The reading scores for the ten seniors are shown in Table 1.   Table 1: Reading Scores for Sample High School Seniors Student Reading Score 1 13.4 2 12.1 3 11.4 4 10.6 5 10.3 6 10.2 7 9.8 8 9.7 9 9.4 10 8.6   Calculate the sample mean…

Here are the top 10 season hitting percentages for members of two baseõall teams, and you must determine which is the best-hitting team, defined as the average. You have to decide which type of average you use and why. Do this by hand or use SPSS.