Short Answer Question (remember to only answer THREE of thes…

Short Answer Question (remember to only answer THREE of these SA questions): Your friend tells you that her family back home is transitioning from individual water wells to a city water system.  She has heard that the city water will be fluoridated and she’s concerned about this.  FIRST, what would you tell her about fluoride? What are the benefits of fluoride? (How it primarily affect health?) (BE SPECIFIC).  THEN, clearly explain what the optimal water fluoridation level is and how that was determined (what specific parameters were considered?).

Johnny is in fifth grade and would much rather spend all day…

Johnny is in fifth grade and would much rather spend all day hanging with the guys        than spend five minutes talking to a girl.  In fact, he has such little interest in sexual        matters that he would even rather do his homework than engage in playing doctor        with the girl next door.  Freud would MOST likely suggest that he is _____.

The researchers were hopeful that in the randomization proce…

The researchers were hopeful that in the randomization process for drug group: placebo and D-penicillamine, the two groups would have similar proportion of patients with the presence of hepatomegaly.  Let be the proportion of patients in D-penicillamine drug group that have the presence of hepatomegaly. Let be the proportion of patients in placebo drug group that have the presence of hepatomegaly.  Is there a statistically significant difference in the proportion of patients with the presence of hepatomegaly in the D-penicillamine and placebo groups?  Using the following output, provide the conclusion context of the problem that clearly answers the researchers’ question. You must include statistical evidence to support your conclusions.     

The researchers were hopeful that in the randomization proce…

The researchers were hopeful that in the randomization process for drug group: placebo and D-penicillamine, the two groups would have similar proportion of patients with the presence of ascites.  Let be the proportion of patients in D-penicillamine drug group that have the presence of ascites. Let be the proportion of patients in placebo drug group that have the presence of ascites.  Is there a statistically significant difference in the proportion of patients with the presence of ascites in the D-penicillamine and placebo groups?  Using the following output, provide the conclusion context of the problem that clearly answers the researchers’ question. You must include statistical evidence to support your conclusions.

Medical researchers are examining the effectiveness of a new…

Medical researchers are examining the effectiveness of a new vaccine against a viral disease. They administer the vaccine to a sample of 500 individuals. 375 of those individuals develop immunity after the vaccination. Based on their results, the researchers calculate an exact 95% confidence interval: (0.710, 0.787). Select the correct interpretation of the interval.