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jeka57 [31]
3 years ago
13

Can someone help lol free 20 points btw

Mathematics
2 answers:
Svet_ta [14]3 years ago
7 0

Answer:

its B

Step-by-step explanation:

poizon [28]3 years ago
5 0

Answer:

The answer is B :) ~Narancia

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A sports writer wished to see if a football filled with helium travels farther, on average, than a football filled with air. To
Vesnalui [34]

Answer:

(-3.07, 11.07)

Step-by-step explanation:

Given that a sports writer wished to see if a football filled with helium travels farther, on average, than a football filled with air. To test this, the writer used eighteen adult male volunteers. These volunteers were randomly divided into two groups of nine subjects each.

Group   Group One     Group Two  

Mean 300.00 296.00

SD 8.00 6.00

SEM 2.67 2.00

N 9     9    

The mean of Group One minus Group Two equals 4.00

 

standard error of difference = 3.333

   df = 16

t = 1.2000

Margin of error = 3.3333* t critical = 3.3333*2.121

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7 0
3 years ago
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lutik1710 [3]
It has infinite solution or many solutions.
The steps are on paper.

5 0
3 years ago
The scale of a model train is 1 inch to 13.5 feet. One of the cars of the model trial is 5 inches long. What is the length, in f
garik1379 [7]
If 1 inch is 13.5 feet, then 5 inches = (13.5 * 5) = 67.5 ft
8 0
3 years ago
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A person invests 3500 dollars in a bank. The bank pays 5% interest compounded
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T= 18.9

8 0
2 years ago
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