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ale4655 [162]
3 years ago
9

What is the Measure of angle PQR? PLEASE HELP ASAP DUE TODAY AND I HAVE NO IDEA HOW TO DO THIS!!

Mathematics
2 answers:
tangare [24]3 years ago
7 0

Answer:

55°

Step-by-step explanation:

Remember:

-  A flat angle is 180°

- The sum of the angles in a triangle is 180°

Annette [7]3 years ago
7 0

Answer: m< PQR = 55 degrees

Step-by-step explanation:

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A researcher reports the following confidence interval for a comparison of the difference between two groups: 95% CI −12.0 [−30.
Lapatulllka [165]

Answer:

Decision: Support the null hypothesis.

Sample mean: -12

Step-by-step explanation:

Hello!

When deciding with a Confidence interval you have to keep in mind that the following conditions are met:

  • The hypothesis and the interval are made for the same parameter.
  • The hypothesis should be two-tailed.
  • The interval and the test have to have complementary confidence and signification levels. This means that if the interval is made with 1 - α= 0.95 the hypothesis test should be made with α= 0.05.

H₀: μ₁ - μ₂= 0

H₁: μ₁ - μ₂≠ 0

α: 0.05

If the interval contains the cero, it means that there is no difference between the means, so you support the null hypothesis.

If the interval doesn't contain the cero, there is a difference between the two means, so you reject the null hypothesis.

The intervals to estimate the population mean have the following structure:

Estimator ± Margin of error

This means that the sample mean (point estimate of the population mean) is in the middle of the calculated interval. To know it's the value you have to do a simple calculation:

sample mean: \frac{Upper bound + Lower bound}{2}

sample mean: \frac{6 + (-30)}{2}

sample mean: -12

I hope it helps!

7 0
4 years ago
How many ways can you choose 4 groups of 4 people from 16 people, assuming the groups are distinct?
Ivanshal [37]
4÷16=4
Your welcome
Give me a thank u
6 0
3 years ago
The graphs of two sine functions are shown below.
Afina-wow [57]

Answer:

"a period change"

Step-by-step explanation:

Simple ways of understanding transformations are:

<u>Phase shift: </u> 2 graphs would be shifted version of each other, all other things constant.

<u>Period change:</u> the 2 graphs would have different cycles, one would be compressed/stretched version of the other, all other things constant

<u>Amplitude Change:</u> The height/crest of the graphs would vary, that is the amplitude. All other things constant.

<u>Addition of Negative constant:</u> this would shift the 1 graph downwards with respect to the other graph, it is a vertical shift. All other things constant.

Now carefully looking at the 2 graphs given, we can see that the cycles are different. One is a more "relaxed", or "stretched" version of the other. This means, the period is changed.

2nd answer choice is right.

8 0
3 years ago
The fish Anastasia caught was 0.78 meter long. Sergei's fish was 0.34 meter less than 1 meter long. Which expression shows the d
Sunny_sXe [5.5K]
0.78 - (1 - 0.34) = 0.78 - 0.66 = 0.12

The difference in lenght is 0.12m.
5 0
3 years ago
HELP ME PLEASE ASAP
alekssr [168]
With what ? I need more instructions
6 0
3 years ago
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