Answer:
The correct option is (c).
Step-by-step explanation:
The assumptions of a two-sample <em>t</em>-test are:
- Independent samples
- Normality
- Equal variances
It is provided that the sample of selected for American adults under the age of 40 is of size, <em>n</em>₁ = 488 and the sample of selected for American adults aged 40 or over is of size, <em>n</em>₂ = 421.
As the sample size is quite large the according to the Central limit theorem the sampling distribution of the sample mean would follow a Normal distribution.
And even if the sample was selected by dialing of various telephone numbers, the sample is not biased since the size of the sample is too large.
So, the sample can be considered as a simple random sample.
Thus, the conditions for two-sample t inference are satisfied.
The correct option is (c).
The first one is not a function due to the rule that there can not be more than one x, such as there is a repeated number 1 , 2 , 1 , 4 There should not be two
x = 1 terms.
Same the same rule applies to the second option as well as the last.
Your answer is C. or the third option
x= 6, 5, 4, 1
y=6, 4, 6, 2
Hope this Helps
Answer:b
Step-by-step explanation:
3.5*5*.5=8.75
Answer:
Step-by-step explanation:
- Government
- Exit Question #1
- Three of the thirteen Original Colonies/States refused to sign the Constitution
- because it did not containThe Bill of Rights. They believed the Constitution
- needed to have people’s rights spelled out. Which of the Bill of Rights that they
- insisted upon is the most significant to you and why? Please name which one and
- write a significant paragraph explaining why (10 points).
