For her physiology class assignment, a student measured systolic blood pressure

Question

For her physiology class assignment, a student measured systolic blood pressure sbp classmates, as well as their smoking status (smoke: smoker or non-smoker) of 24 and sodium intake (sodium: moderate or high). She wanted to know whether smoking and/or sodium affect blood pressure. Her linear model results and a boxplot for the data are shown below. >modBP-Im(sbp-smoke+sodium, data bp) >Anova(modBP)Anova Table (Type II tests) Response: sbp Sum Sq Df F value Pr( F) smoke 682.67 1 5.9004 0.0242000 sodium 2053.50 1 17.7487 0.0003905 Residuals 2429.67 21 160 sodium high moderate 140 120 yes smoke What are the conclusions from the ANOVA table? Do they support what you expect from observing the boxplot graph? Please elaborate. a.

Explanation / Answer

Since

P- Value for Smoke is 0.0242

Hence at the level of significance greater than 0.025 we reject the null hypothesis of ANOVA i.e. systolic blood pressure is effected by smoking habits.

While

P-Value for Sodium intake is 0.00039 which is too low hence we reject the null hypothesis for ANOVA i.e.systolic blood pressure is effected by Sodium intake

Yes,as we see the box plot there is difference between blood pressure of smokers and non smoker as well there is difference between moderate and high sodium intake hence conclusion support the box plot.

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