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Bingel [31]
2 years ago
12

A high school teacher recorded the number of hours each of his students spent on a social networking website in a particular wee

k and related this with their scores on a math test they took at the end of the week. The data is represented in the scatter plot.
Qualitatively evaluate the information in the scatter plot. An acceptable estimate for the graph's correlation coefficient could be
[ Select
1.00
0.75
0.15
0.55]

Based on the data, we can conclude that the time students spent on the social networking website had a
[ Select
week or insignificant
strong and positive
strong and negative
moderate and negative]
effect on their performance on the test.
Mathematics
2 answers:
Vesnalui [34]2 years ago
5 0

Qualitatively evaluate the information in the scatter plot. An acceptable estimate for the graph's correlation coefficient could be

[ Select

1.00

0.75

0.15

0.55]

Based on the data, we can conclude that the time students spent on the social networking website had a

[ Select

week or insignificant

strong and positive

strong and negative

moderate and negative]

effect on their performance on the test.

Nikitich [7]2 years ago
4 0

Answer:

theres the picture tysm

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Kaitlyn saves $6 each week. After correctly carrying out the Solve step of the five-step problem-solving plan, which solution sh
ch4aika [34]

Answer:

1. 10 weeks

Step-by-step explanation:

Apparently, we want to find the number of weeks (w) that Kaitlyn must save $6 in order to have a total of $60.

... $6 × w = $60

Divide by $6 to get ...

... w = $60/$6 = 10

Kaitlyn must save for 10 weeks (if she starts with a balance of 0).

_____

<em>Comment on the problem statement</em>

The problem reads like we came in somewhere in the middle of it. We don't know what other steps you've been asked to perform, or any of the details of the problem you're asked to solve. We don't have Kaitllyn's initial balance, for example, which is essential to determining how long she must save. (If Kaitlyn's initial balance is $33, for example, she must only save for 4.5 weeks.)

7 0
3 years ago
the perimeter of a rectangle is 60 meters. if the length of the rectangle is 14 meters. what is the width of the rectangle.,
Ray Of Light [21]
Perimeter is 2width+2length
Therefore since you already know that the perimeter is 60 and the length is 14 you can set up the equation; 
60= 2w+14
with this you then need to find w so;
60=2w+14
-14     -14
46=2w
(46/2)=(2w/2)
13=w
The width is 13
8 0
3 years ago
Read 2 more answers
A public health official is planning for the supplyof influenza vaccine needed for the upcoming flu season. She wants to estimat
Marizza181 [45]

Answer:

n=\frac{0.5(1-0.5)}{(\frac{0.04}{1.64})^2}=420.25  

And rounded up we have that n=421

Step-by-step explanation:

We know that the sample proportion have the following distribution:

\hat p \sim N(p,\sqrt{\frac{p(1-p)}{n}})

In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 90% of confidence, our significance level would be given by \alpha=1-0.90=0.1 and \alpha/2 =0.05. And the critical value would be given by:

z_{\alpha/2}=-1.64, z_{1-\alpha/2}=1.64

The margin of error for the proportion interval is given by this formula:  

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

And on this case we have that ME =\pm 0.04 and we are interested in order to find the value of n, if we solve n from equation (a) we got:  

n=\frac{\hat p (1-\hat p)}{(\frac{ME}{z})^2}   (b)  

We assume that a prior estimation for p would be \hat p =0.5 since we don't have any other info provided. And replacing into equation (b) the values from part a we got:

n=\frac{0.5(1-0.5)}{(\frac{0.04}{1.64})^2}=420.25  

And rounded up we have that n=421

5 0
3 years ago
Determine the volume of the shaded region.
vovangra [49]
The volume of the shaded region is 1650 cubic feet.

5 0
3 years ago
45.Erica Glaser deposits a check for $20,005.00 and $1.234.00 in cash. What is het total
Gwar [14]
Her total is $21,239
5 0
3 years ago
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