Answer:
1st Question: The answer is 3.573
2nd Question: The answer is 3.971
Step-by-step explanation:
Answer:
a. An observational study
Step-by-step explanation:
An observational study is a study that has to do with the observation of individuals involved in the study. In such a study, zero effort is put to change the outcome.
This question tells us that the random sample of 291 individuals that underwent the weight loss program would go through a system of follow up to find out the change in weight. Therefore the design of the study is clearly an observational study.
Answer:
b c e g are all correct
Step-by-step explanation:
b. √(50x²) = √(50) * √x² = √(25) * √x² * √(2) = 5*x*√2
c. √(32x) = √(16 *2x) = √16 *√(2x) =4*√(2x)
d. √(18n) = √(9*2n) = √9*√(2n) = 3*√(2n)
g. √(72x²) = √(36 * 2 * x²) = √36 *√x² * √2 = 6x*√2
I believe its B. Stratified because the owner had to speak to ten individuals, meaning he divided it into smaller groups.