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jarptica [38.1K]
2 years ago
13

Please help me interpret the p-value!

Mathematics
1 answer:
alexandr402 [8]2 years ago
3 0

The correct interpretation of the p-value is given by:

B If the average battery life really is 5 hours, then a sample of 10 observations having a sample mean of 4.25 hours or lower would only occur about 3.8% of the line.

<h3>How to find the p-value of a test?</h3>

It depends on the test statistic z, as follows:

  • For a left-tailed test, it is the area under the normal curve to the left of z, which is the p-value of z.
  • For a right-tailed test, it is the area under the normal curve to the right of z, which is 1 subtracted by the p-value of z.
  • For a two-tailed test, it is the area under the normal curve to the left of -z combined with the area to the right of z, hence it is 2 multiplied by 1 subtracted by the p-value of z, which means that the p-value for a two-tailed test is twice the p-value of a one-tailed test.

In this problem, a left-tailed test is used, as we are testing if the mean is less than 5 hours.

The sample mean from the 10 times was of 4.25, and the p-value is of 0.038, which means that the area to the left of Z under the normal curve is of 0.038, that is, a sample mean of 4.25 hours or lower would only occur about 3.8% of the line, hence option B is correct.

You can learn more about p-values at brainly.com/question/13873630

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tiny-mole [99]

Answer:

x=2

TU:4(2)-1=7

UB: 3

TB: 10

Step-by-step explanation:

4x-1+2x-1=5x

6x-2=5x

6x=5x+2

subtract 5x from both sides

x=2

TU: (4x-1)

4(2)-1

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TU:4(2)-1=7

UB: (2x-1)

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2 years ago
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pickupchik [31]

Answer:

C. It cannot be factored into a perfect square.

Step-by-step explanation:

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8 0
3 years ago
Larry, Mary, and Terry each had a full glass of juice. Larry drank 3/4 of his. Mary drank 3/8 of hers. Terry drank 7/10 of his.
KiRa [710]
Answer is Mary because
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3 0
3 years ago
Read 2 more answers
Given that Triangle ABC ~ DEF, solve for X.​
Vadim26 [7]

Answer:

x = 7

Step-by-step explanation:

if ABC ~ DEF than AB ~ ED, AC ~ DF, and CB ~ FE

The ratio of AB to ED is given as 5/30 = 1/6

For AC ~ ED the ratio would be same x/42 = 1/6 cross multiply it

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Answer:

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Step-by-step explanation:

We know that a cube of sidelength L has a volume:

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Here, we know that the volume of water that the cube can hold is:

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Then the volume of our cube is exactly that:

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Then we have the equation:

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Where we used that:

∛(a/b) = ∛a/∛b

Solving the cubic roots, we get:

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4 0
3 years ago
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