Summary statistics: Hean Variance Std. dev. Std. err. Median Range Min Max Q1 Q3 206 Column 89 180 269 186 228 Toral Cholestero 14 210.21429 722.54285 26.882017 7.1845213 Sampe size: 14 R (corre ation cceff c ert) = 0.71781062 R-sq = 0.51525209 Estirate of error standard deviation: 19.430535 Parameter estimates: Parameter Estimate Std. Err. Alternative DF T-Stat P-value Intercæpt 151.35:65 17.25376 + 0 12 3.7563866 <0.0001 Slope 1.3990542 0.39173745 +0 12 3.5714332 0.0038 Analysis of variance table for regression model: Source DF MS F-stat P-value Vocel 1 4840.4622 4340.4522 12.755135 0.C038 Error 12 4553.895 379.49125 ota 13 9394.3571
Dr. Seboo has collected the total cholesterol levels of all his patients. He is trying to figure what the typical cholesterol level falls. Use the following output to answer the questions.
a. What variable was recorded in the data collected? Classify the variable as categorical or quantitative.
Variable: ______________________ Circle one: Categorical or Quantitative
b. Describe the shape of the above distribution:
c. The average cholesterol level was _______________, and 50% of this sample cholesterol levels was ________________ or more. The minimum cholesterol level was _______________, while the maximum number cholesterol level was _________________. The middle 50% of cholesterol levels in this sample were between ______________ and ______________. According to _____________________________ Rule, we expect ________% of the cholesterol levels to be between ________________ and _______________ (two standard deviations from the mean).
d. Construct a 95% confidence interval for the mean cholesterol level.
Formula with values:
95% confidence interval: ( , )
Interpret the above interval:
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