WPC 300 FINAL ACTUAL TEST QUESTIONS WITH COMPLETE SOLUTION VERIFIED RESOURCE

WPC 300 FINAL ACTUAL TEST QUESTIONS
WITH COMPLETE SOLUTION VERIFIED
RESOURCE

●● Which of the following statements is NOT correct based on the
sample data provided?


The standard deviation for HDL is 0.6152
The mean for LDL is 115
The median for Total Cholesterol is 186
The upper limit of the 95% confidence interval for BP is 95.9
Answer: Use distribution of every variable to look up each stat


●● Looking at the distribution of BMI, you observe that the data
centrality is measured as:
Standard deviation = 4.41
n = 442
Correct! Mean = 26.4
Standard Error = 0.21
Answer: mean, median, and mode are measures of data centrality

, ●● Looking at the distribution of Glucose, you observe that the
distribution spread is measured as:
Mean is 91.3
95% confidence interval is 90.2 to 92.3
Correct Answer Interquartile range is 15
Standard error is 11.5
Answer: IQR (range), variance, standard deviation are measures of
distribution spread


●● It is generally believed that the average population age is 50. You
claim that the population average age is less than 50. Perform a
statistical test on the sample to see if the average age for the sample is
consistent with your hypothesis (use a margin of error of 5%). What is
the p-value from the test?
0.0089
0.9911
0.05
0.0179
Answer: distribution of age>test mean>enter hypothesis mean (50)>one-
tailed test p-value is answer


**since only looking at "less than", one-tail test used, prob < t