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WITCHER [35]
3 years ago
9

How big is the home field advantage in the National Football League (NFL)? To investigate, we select a sample of 80 games from t

he 2011 regular season1 and find the home team scored an average of 25.16 points with a standard deviation 10.14 points. In a separate sample of 80 different games, the away team scored an average of 21.75 points with a standard deviation of 10.33 points. Use this summary information to find a 90%c onfidence interval for the mean home field advantage, µH- µA, in points scored.
The 90% confidence interval is______ to________ .
Mathematics
1 answer:
ElenaW [278]3 years ago
5 0

Answer:

0.74 to 6.06

Step-by-step explanation:

The groups are independnet,

SE(xh bar-xa bar)=sqrt [sh^2/nh+sa^2/na]=sqrt [10.1^2/80+10.3^2/80]=1.61

At df=157, the t critical is 1.65

90%c.i=(xh bar-xa bar)+-tcritical SE(xh bar-xa bar)

=(25.2-21.8)+-1.65*1.61

=0.74 to 6.06

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Kelly goes to the store and buys 9 boxes of cookies. The cost of each box is represented with the letter c. Which expression cou
MatroZZZ [7]

Answer:

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Step-by-step explanation:

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3 years ago
8-6x>-18 solve for x
EleoNora [17]

Answer:

x=5

Step-by-step explanation:

Well all i did was guess a random number from 1-10 so I could see what numbers make the equation bigger than -18 and the fist thing I guessed was 5 so this is what I did

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2 years ago
Given the points (3, 2) and (6, 4), which of the following are true about the line passing through these points? The line has a
Ad libitum [116K]

Answer:

The slope is 2/3 and the function is y=2/3x  which is a direct variation function.

Step-by-step explanation:

To find the slope of a line between two points, we use the equation

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Distribute

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3 0
2 years ago
Find the Factors of 84.
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7 0
3 years ago
Read 2 more answers
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