If the population is skewed, the sampling distribution of all the sample means (x-bars) will be skewed.
Blog
A two-sided test of H0: μ=0, α=0.05 (two sided), yields a p-…
A two-sided test of H0: μ=0, α=0.05 (two sided), yields a p-value of 0.019. Will the 95% confidence interval for μ include 0?
Which of the following statistical tests would you use? You…
Which of the following statistical tests would you use? You would like to compare the blood pressure of 6-year old children in three groups healthy weight, overweight and obese (total n=300).
Survival analysis is used to determine the time to some even…
Survival analysis is used to determine the time to some event.
Cox Proportional Hazard Regression Models are like logistic…
Cox Proportional Hazard Regression Models are like logistic regression combined with survival analysis and they often require large sample sizes when dealing with many variables.
In the following 2 by 2 contingency table of Survival at 5 y…
In the following 2 by 2 contingency table of Survival at 5 years (yes or no) by Age at Diagnosis (=age 50), the data cell counts are presented as follows: under survival “yes” and age =50 cell count= 55, under survival “no” age =50 cell count=75. What is the expected value for the cell under survival “yes” and age >=50 cell where the cell count= 55?
In our example 2 by 2 contingency table of Survival at 5 yea…
In our example 2 by 2 contingency table of Survival at 5 years (yes or no) by Age at Diagnosis (=age 50), the data cell counts are presented as follows: under survival “yes” and age =50 cell count= 55, under survival “no” age =50 cell count=75. What is the overall calculated Chi-sq value?
A patient is admitted with a secondary immunodeficiency from…
A patient is admitted with a secondary immunodeficiency from chemotherapy. The nurse expects the plan of care to focus on which aspect?
Which classic signs and symptoms are manifestations of hyper…
Which classic signs and symptoms are manifestations of hyperthyroidism? (Select all that apply.)
The nurse planning the postoperative instructions for the pa…
The nurse planning the postoperative instructions for the patient who will undergo a hypophysectomy. Which information is most important for the nurse to include? (Select all that apply.)