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prohojiy [21]
3 years ago
7

Have you tried a Practice plan for SAT/ACT? www.testizen.com

SAT
1 answer:
Vikentia [17]3 years ago
3 0

Answer:

Yes i have

Explanation:

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Which of these is an agent of chemical weathering?.
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<h2 /><h3>Which of these is an agent of chemical weathering?</h3>

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2 years ago
Imagine that you are a scientist who has discovered a new object. You want to find out if the object is biotic or abiotic. You o
luda_lava [24]

Answer: the answer is the object cannot create energy.

Explanation:

I just done the quick check for connections academy.

7 0
3 years ago
To compare the average amount of time that canadians and americans spend commuting, a researcher collects a sample of canadians
yKpoI14uk [10]

The standard error of the difference of sample means is 0.444

From the complete question, we have the following parameters

<u>Canadians</u>

  • Sample size = 50
  • Mean = 4.6
  • Standard deviation = 2.9

<u>Americans</u>

  • Sample size = 60
  • Mean = 5.2
  • Standard deviation = 1.3

The standard error of a sample is the quotient of the standard deviation and the square root of the sample size.

This is represented as:

SE = \frac{\sigma}{\sqrt n}

The standard error of the Canadian sample is:

SE_1 = \frac{2.9}{\sqrt{50}}

So, we have:

SE_1 = 0.41

The standard error of the American sample is:

SE_2 = \frac{1.3}{\sqrt{60}}

So, we have:

SE_2 = 0.17

The standard error of the difference of sample means is then calculated as:

SE= \sqrt{SE_1^2 + SE_2^2}

This gives

SE= \sqrt{0.41^2 + 0.17^2}

SE= \sqrt{0.197}

Take square roots

SE= 0.444

Hence, the standard error of the difference of sample means is 0.444

Read more about standard errors at:

brainly.com/question/6851971

5 0
3 years ago
You listened to a song , did you use hardware or software
Verdich [7]
What does this mean? Assuming you're talking about listening to the song on a computer, you'd be using a software.
6 0
4 years ago
Janice works 8 hours per day on fridays and saturdays each week. She earns $9. 70 per hour. What is her gross pay in a week?.
Nat2105 [25]

Answer:

8•2•9.70=155.20

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8 for 8 hours per shift

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6 0
2 years ago
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