A sample of 80 plants were paired together by genetic similarities. In each pair one plant was given Fertilizer A and the other Fertilizer B. After a month using these fertilizers the increases in height were recorded the passenger seat. The 40 differences in heights (A-B) had a mean of -0.8 cm.with a standard deviation 3.3 cm. We wish to know if Fertilizer B makes plants grow faster. Test Statistic: According to your tables, the P-value is approximately: P-value Is there sufficient evidence to conclude that fertilizer B is more effective? Choose one Find the 97% confidence interval for the population mean difference in height increases.
