statistics
posted by Kim .
A diabetes nurse educator believes that her patients have particularly bad control of their blood sugar. To test this she selected the fasting blood sugar values for 15 of the patients she saw this week. The national mean for patients with this level of severity of diabetes is 120. Test the research hypothesis that the scores from the nurses patients are higher than the average. Show all the components required.
Scores: 172,122,189,106,196,195,151,155,162,195,231,204,232,213,209

Ho: mean = 120
Ha: mean > 120
Find the mean first = sum of scores/number of scores
Subtract each of the scores from the mean and square each difference. Find the sum of these squares. Divide that by the number of scores to get variance.
Standard deviation = square root of variance
Z = (mean1  mean2)/standard error (SE) of difference between means
SEdiff = √(SEmean1^2 + SEmean2^2)
SEm = SD/√n
If only one SD is provided, you can use just that to determine SEdiff.
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability related to the Z score.
Respond to this Question
Similar Questions

health
When comparing the blood smears of patients with intact spleens to those of patients without spleens, the blood smears of patients without spleens will likely reveal A. many more fragile and old erythrocytes. B. many more lymphocytes … 
medicine
when comparing the blood smears of patients with intact spleens to those of patients without spleens, the blood smears of patients without spleens will likely reveal? 
Math
a technician draws 10 cc of a patients blood to be tested for cholesterol and for red blood cells. identify a.the sample b.the population c. the variable being studied i attempted but im not sure if its right...i said a) the 10 cc … 
Body systems/ terminology
When comparing the blood smears of patients with intact spleens to those of patients without spleens, the blood smears of patients without spleens will likely reveal A. many more fragile and old erythrocytes. B. many more lymphocytes … 
Epidimiology
In a hypothetical study, 1000 patients attending a hospital general outpatient department were tested for diabetes using the following two tests: Fasting blood sugar (FBS) Glucose tolerance test (GTT) There were 100 … 
math
In a clinical trial, a drug used to reduce blood pressure caused side effects in 6% of the patients who took it. For a new rial, two patients were selected at random. Find the probability that both the patients had side effects. 
Statistics
In a study of the effect of a medical treatment, a simple random sample of 300 of the 500 participating patients was assigned to the treatment group; the remaining patients formed the control group. When the patients were assessed … 
Statistic
In a population of over 15,000 patients, the distribution of systolic blood pressure follows the normal curve. Investigators believe the average systolic blood pressure in the population is 120 mm. The investigators take a simple random … 
math
A special diet is intended to reduce systolic blood pressure among patients diagnosed with stage 2 hypertension. If the diet is effective, the target is to have the average systolic blood pressure of this group be below 150. After … 
statistic
A special diet is intended to reduce systolic blood pressure among patients diagnosed with stage 2 hypertension. If the diet is effective, the target is to have the average systolic blood pressure of this group be below 150. After …