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chubhunter [2.5K]
3 years ago
13

Which function is represented by the graph? PLEASE HELP IM BEING TIMED

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

Answer:

<u>1st Option:</u>

<u />f(x)=-2|x|+1<u />

Step-by-step explanation:

The attached picture below is proof that f(x)=-2|x|+1 is the correct function that represents the graph.

Hope this helps! :)

olganol [36]3 years ago
4 0

Answer:

I think the second one

Step-by-step explanation:

I haven't learned how to do this.

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These are the steps needed for this question hope this helps if there is any more questions do feel free to ask them

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3 years ago
A study was conducted to investigate the effectiveness of hypnotism in reducing pain. An SRS of 8 subjects was randomly selected
chubhunter [2.5K]

Answer:

e. No, the p-value is greater than 0.01, so there is insufficient evidence at the 0.01 level to conclude that pain levels are lower after hypnotism.

Step-by-step explanation:

Hello!

The study's objective is to test if hypnotism reduces pain.

A sample of n=8 subjects was taken and the pain level was recorded in each subject before and after being hypnotized.

The variable of interest was determined by calculating the difference of pain level after - before hypnosis. This is a paired sample test and the variable can be determined as:

Xd: Difference between pain level felt after hypnosis and pain level felt before hypnosis of a subject.

The sample average and standard deviation obtained were:

Xd= -3

Sd= 3

And the variable is presumed to be approximately normal.

An approximately normal distribution is enough to conduct a paired sample t-test.

If the claim is that hypnosis reduces pain, then the average pain level after hypnosis should be less than the average pain level before hypnosis, then the average difference is expected to be negative, symbolically: μd < 0

The test will be one-tailed and so will be the p-value.

Remember: The p-value is defined as the probability corresponding to the calculated statistic if possible under the null hypothesis (i.e. the probability of obtaining a value as extreme as the value of the statistic under the null hypothesis).

So first step is to calculate the value of the statistic under the null hypothesis and then you can calculate the p-value.

H₀: μd ≥ 0

H₁: μd < 0

t_{H_0}= \frac{X_d-Mu_{d}}{\frac{S_d}{n} }= \frac{-0-0}{\frac{3}{\sqrt{8} } } = -2.828= -2.83

The DF of the t-test are n-1= 7

Then you can calculate the p-value as:

P(t₇≤-2.83)= 0.0127

The level of the test is α: 0.01

The decision rule is:

If p-value ≤ α, reject the null hypothesis.

If p-value > α, do not reject the null hypothesis.

The p-value > α the decision is to not reject the null hypothesis.

Correct option: e. No, the p-value is greater than 0.01, so there is insufficient evidence at the 0.01 level to conclude that pain levels are lower after hypnotism.

I hope this helps!

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3 years ago
1+1<br> NEED HELP LOL<br> urgent<br> help
navik [9.2K]

Answer:

<h3>2</h3>

Step-by-step explanation:

\mathrm{Add\:the\:numbers:}\:1+1=2\\\\

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3 years ago
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An inch is equal to about 2.54 centimeters. Write an expression who he estimates the number of centimeters in x inches. Then est
trasher [3.6K]

There are 30.48 centimeters in 12 inches.

Step-by-step explanation:

Given,

1 inch = 2.54 centimeters

For x inches;

x inches = 2.54*x centimeters

x inches = 2.54x centimeters

Number of centimeters in 12 inches

We will put x=12

12 inches = 2.54(12) centimeters

12 inches = 30.48 centimeters

There are 30.48 centimeters in 12 inches.

Keywords: multiplication

Learn more about multiplication at:

  • brainly.com/question/10744457
  • brainly.com/question/10754198

#LearnwithBrainly

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Answer:

0.81649658092

Step-by-step explanation:

The square root of 6 equals 2.44948974278. Divide that by 3, and you are given 0.81649658092.

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