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murzikaleks [220]
2 years ago
8

Find the slope of the line.

Mathematics
1 answer:
Natasha_Volkova [10]2 years ago
4 0

Answer:

-1

Step-by-step explanation:

Rise/Run equates it to be -1/1 wich is -1

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A researcher surveyed 150 high school students and found that 68% played a musical insturment. What would be a reasonable range
maria [59]

Answer:

The reasonable range for the population mean is (61%, 75%).

Step-by-step explanation:

The interval estimate of a population parameter is an interval of values that consist of the values within which the true value of the parameter lies with a certain probability.

The mean of the sampling distribution of sample proportion is, \hat p.

One of the best interval estimate of population proportion is the 95% confidence interval for proportion,

CI=\hat p \pm z_{\alpha/2}\sqrt{\frac{\hat p(1-\hat p)}{n}}

Given:

n = 150

\hat p = 0.68

The critical value of <em>z</em> for 95% confidence level is:

z_{\alpha/2}=z_{0.05/2}=z_{0.025}=1.96

Compute the 95% confidence interval for proportion as follows:

CI=\hat p \pm z_{\alpha/2}\sqrt{\frac{\hat p(1-\hat p)}{n}}

     =0.68\pm1.96\sqrt{\frac{0.68(1-0.68)}{150}}\\\\=0.68\pm 0.0747\\\\=(0.6053, 0.7547)\\\\\approx (0.61, 0.75)

Thus, the reasonable range for the population mean is (61%, 75%).

5 0
3 years ago
Need help with this question thanks :)
Fantom [35]

Answer:

Omar could invite 19 friends.

Step-by-step explanation:

the equation for this word problem would be

5x+30=125

subract 30 from both sides

5x=95

divide both sides by 5

x=19

8 0
3 years ago
Read 2 more answers
Help please I don’t understand
dmitriy555 [2]
88cm^2. area is the coverage of the area inside of a given shape, since some of the frame is cut off for a picture (making it not a full rectangle) you must find the area of the whole frame and find the area of the cutout. after finding those, subtract the cutout from the frame and then you have the area of the frame
7 0
3 years ago
2. A sum of $400 was shared between Samantha and Jade. Samantha received S100 more than Jade. a) If Jade received $150, how much
Marina CMI [18]

Answer:

Samantha share =$250

ratio = 5:3

Step-by-step explanation:

Samantha

= jade + 100

jade

150

samantha

150 + 100 = 250

ratio

250:150

5:3

5 0
2 years ago
Need help ASAP ? <br>3/4×20
In-s [12.5K]

3/4 x 20

3/4 x 20/1

3 x 20 = 60

4 x 1 = 4

60 / 4 = 15

8 0
3 years ago
Read 2 more answers
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