Do students from uf tend to spend less time texting than students at fsu? A random sample of 100 students was taken from both schools. Let muf be the population mean number of text messages sent per day at uf and let mufsu be the population mean number of text messages sent per day at fsu. How should we write the alternative hypothesis?

45 was divided by a power of ten to get 4.5. what power of ten was it divided by? people 4.5

Ebert used to make $22 an hour, but got a 10% raise. how much more will he make in a 40 hour work week with raise?

Researchers are conducting experiments to determine the role of alcohol in the development of depression. after the study is complete, they determine that the relative risk of developing depression is 1.55 with a 95 % ci of 1.2 -1.9. each group is then divided into nonsmokers and smokers. the relative risk for the nonsmokers is 1.12 with a 95% ci of 0.87-1.37. the relative risk for the smokers is 1.7 with a 95 % cl of 1.5-1.9. what type of bias may affect this study? a. procedure bias b. recall bias c. selection bias d. confounding e. lead-time bias