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jonny [76]
3 years ago
6

I am on my phone dont judge

Mathematics
1 answer:
DENIUS [597]3 years ago
5 0
The answer would be car B as it has to go up $40 to reach the rounded number as the other two only have to go up by $20
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Mercedes receives a $25 gift card for downloading music and wants to determine how many songs she can purchase. Each downloaded
Naddik [55]
Your answer is A. he can get 19.37 songs because 25 divided by 1.29 is 19.37 (mark me as brainliest, this answer is 100% accurate)
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3 years ago
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Question on Statistics and Confidence Intervals
Digiron [165]

The phrasing "nine times out of ten" means 9/10 = 0.90 = 90% is the confidence level. We're confident 90% of the time that the confidence interval captures the population parameter we're after (in this case mu = population mean)

The portion "have an average score within 5% of 75%" means that 75% = 0.75 is the center of the confidence interval, and it goes as low as 0.75 - 0.05 = 0.70 and as high as 0.75 + 0.05 = 0.80

This confidence interval is from 70% to 80%, meaning that nine times out of ten, we're confident that the average score is between 70% and 80%

We write the confidence interval as (0.70, 0.80). It's common to use the notation (L, U) to indicate the lower (L) and upper (U) boundaries. You might see the notation in the form L < mu < U. If so, then it would be 0.70 < mu < 0.80; either way they mean the same thing.

The margin of error is 0.05 as its the 5% radius of the interval. It tells us how far the most distant score is from the center (75%)

=========================================

In summary, we have these answers

  • confidence level = 90%
  • margin of error = 5% = 0.05
  • confidence interval = (0.70, 0.80)
  • interpretation = We're 90% confident that the average exam score is between 0.70 and 0.80
4 0
3 years ago
Solve the question.<br> –3 + x = 11
s2008m [1.1K]

Answer:

x=14

Step-by-step explanation:

-3+x=11

+3    +3

x=14

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PLZ GIMME A FRIEND REQUEST. IM LONELYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY
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Here is a picture of an older version of the flag of Great Britain. There is a rigid transformation that takes Triangle 1 to Tri
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  The side lengths are the same.

Step-by-step explanation:

A rigid transformation does not change any dimensions. The side lengths are the same.

8 0
4 years ago
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