Thank you, that makes a lot more sense. I was probably confused and overthinking the question because of all the other extra information provided in the problem.
I appreciate the help! :)
I only assumed we had to use the effect size and standard deviation to calculate the sample size because we were provided with information about the power and significance level. Also, I am not totally sure of what "elevation" means in this problem.
Thanks!
Hello! Thank you for welcoming me and the reply!
I should have probaby added this to the original post, but shouldn't the effect size and standard deviation be calculated somehow? or am overthinking this too much?
Thanks again!
You are interested in studying the relationship between sodium consumption and the development of hypertension. 32% of Americans are hypertensive (systolic blood pressure>140), and a further 29% are prehypertensive (140≥SBP>120). Detecting a 1 mm Hg SBP elevation with 80% power at the 0.05%...