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Bogdan [553]
4 years ago
11

Help me with 1 and 2 please

Mathematics
1 answer:
Bezzdna [24]4 years ago
5 0

Here are your answers. I hope this helps.

1) y = 10x

2) y = x

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Suppose the speeds of vehicles traveling on a highway are normally distributed and have a known population standard deviation of
ladessa [460]

Answer:

The margin of error for the confidence interval for the population mean with a 98% confidence level is 2.88 miles per hour.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.98}{2} = 0.01

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.01 = 0.99, so z = 2.326

Now, find the margin of error M as such

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

Find the margin of error for the confidence interval for the population mean with a 98% confidence level.

M = 2.326*\frac{7}{\sqrt{32}} = 2.88

The margin of error for the confidence interval for the population mean with a 98% confidence level is 2.88 miles per hour.

5 0
3 years ago
5 pens for 14 dollars rounded to the nearest hundred
tatiyna

Answer:

Step-by-step explanation:

Your dumb

7 0
3 years ago
A. 10<br> b. 36<br> c. 40 <br> d. 20
8090 [49]
Yes photo math!!!!!!! It will save your life
8 0
3 years ago
Sue graphed the formula for converting temperatures from Fahrenheit to Celsius. If the temperature is 50 degrees Fahrenheit, wha
KATRIN_1 [288]

Answer:

Second Option (10° Celsius)

Step-by-step explanation:

There is a formula to convert the temperature which is in degree Celsius into degree Fahrenheit and vice versa. The formula to convert the temperature in degree Fahrenheit into degree Celsius is:

C° = (F° - 32) * 5/9.

It is given that the temperature is 50° Fahrenheit. Therefore, F° = 50°. Substituting F° = 50° in the formula gives:

C° = (50° - 32) * 5/9.

Further simplification results in:

C° = 18 * 5/9. Therefore, C° = 10°.

So the correct answer is 10° Celsius!!!

4 0
3 years ago
Read 2 more answers
NEED ASAP PLEASE
olga nikolaevna [1]

Answer:

15

15x4 + 10 =

8 0
3 years ago
Read 2 more answers
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