I don't understand the formulas and rationales for the attached. I also don't have the correct version of excel to use the tool pack I need so I am doing everything manually. I am doing the work on my own but want to make sure it is somewhat correct prior to turning in. Any help would be appreciated. Thank you.
With regard to hypothesistesting about two means, what is the distinction between two independent populations and two related populations? Be specific but brief in about 4 or 5 paragraphs, if possible.
1. Systolic blood pressure in different age groups
The following table contains a random sample of 40 women partitioned into three groups:
Group 1: ages below 20
Group 2: ages 20 through 40
Group 3: ages over 40
The values in the table are the systolic blood pressure levels
The Hypothesis Test:
H0: u1 = u2 = u3
A company is researching the effectiveness of a new website design to decrease the time to access a website. Five website users were randomly selected and their times (in seconds) to access the website with the old and new designs were recorded. The results follow:
User Old Website Design New Website Design
A 30 15
B 45 20