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Delicious77 [7]
3 years ago
12

Pls help me pls and thank you

Mathematics
1 answer:
Alika [10]3 years ago
3 0

Answer:

10

Step-by-step explanation:

2/3 of 15 is 10

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Describe the slope of the line of best fit
Aliun [14]

Answer:

The graph represent a scatter plot between variable A on the horizpntal line and the variable B on the vertical line.

A line of best fit is a straight line drawn through the maximum number of points on a scatter plot balancing about an equal number of points above and below the line.

As shown by graphinf a line through the maximum number of points, balancing about an equal number of points above and below the line, we can deduce that:

<u>The line of best fit drops from left to right, so the variables have a negative correlation. </u>

3 0
3 years ago
A newspaper began publication in 1897 and was printed daily for 76 years . In what year did the newspaper stop publication ?
valentina_108 [34]

Answer:

1973

Step-by-step explanation:

you take the start yea and add it to the amount of years it was printed and you have your answer

4 0
3 years ago
g A random sample of 100 students was taken. Eighty-five of the student in the sample experienced anxiety during the exam. We ar
BaLLatris [955]

Answer:

The test statistic is z = 1.25

Step-by-step explanation:

We are interested in determining whether or not the proportion of the student who experience anxiety during the exam is significantly more than 80%.

At the null hypothesis, we test if the proportion is 80%, that is:

H_0: p = 0.8

At the alternate hypothesis, we test if the proportion is more than 80%, that is:

H_a: p > 0.8

The test statistic is:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

In which X is the sample mean, \mu is the value tested at the null hypothesis, \sigma is the standard deviation and n is the size of the sample.

80% is tested at the null hypothesis:

This means that \mu = 0.8, \sigma = \sqrt{0.2*0.8} = 0.4

A random sample of 100 students was taken. Eighty-five of the student in the sample experienced anxiety during the exam.

This means that n = 100, X = \frac{85}{100} = 0.85

The test statistic is

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

z = \frac{0.85 - 0.8}{\frac{0.4}{\sqrt{10}}}

z = 1.25

The test statistic is z = 1.25

4 0
3 years ago
Find the value of the power.<br> 2400<br> The value of the power is
Aloiza [94]
The value of power is
0
7 0
3 years ago
Here are some numbers written in standard form. From these numbers write down/
ELEN [110]

Answer:

When we have a number like:

1.0x10^n

To rewrite this in standard form, we need to:

if n is positive, we move the decimal point n times to the right, adding zeros when necessary.

1.0x10^3

n = 3. then we add 3 zeros between the one and the decimal point, this is:

1.0x10^3 = 1000

if n< 0, then we move the decimal point n times to the left.

If we had:

1.0x10^-3

We move the decimal point 3 times to the left, adding zeros as this is needed.

1.0x10^-3 = 0.001

if n = 0, we have:

1.0x10^0 = 1.0

Now let's rewrite all the given numbers:

A) 3.4x10^-1  = 0.34

B) 1.36x10^6  = 1360000

C) 7.9x10^0  = 7.9

D) 2.4x10^5  = 240000

E) 5.21x10^-3  = 0.00521

F) 4.3x10^-2 = 0.043

6 0
3 years ago
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