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SIZIF [17.4K]
3 years ago
7

PLEASE HELP! In a film study, a sample of 300 movies was found to have an average runtime of 116 minutes with a standard deviati

on of 15 minutes. What is the margin of error for any sample of movie runtimes with 90% confidence (z=1.64)?
Mathematics
1 answer:
BigorU [14]3 years ago
8 0

Answer:

The answer is 1.42!!!!!!

Step-by-step explanation:

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Find the ordered pairs for the x- and y-intercepts of the equation 3x − 2y = 18 and select the appropriate option below.
olasank [31]
<h2>Greetings!</h2>

Answer:

B)

Step-by-step explanation:

Y intercept:

Simply substitute all the x values with 0:

When x = 0:

3(0) - 2y = 18

Move the - 2y over to the other side making it a +2y:

0 = 18 + 2y

Move the +18 over to the other side making it a -18:

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Divide both sides by 2:

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-9 = y

So y intercept is:

<h3> (0 , -9)</h3>

X - intercept:

Simply substitute all the Y's with 0:

3x - 3(0) = 18

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Divide both sides by 3:

\frac{3x}{3}  = \frac{18}{3}

x = 6

So the X intercept is:

<h3>(6 , 0)</h3>

This means that your guess of B is correct.


<h2>Hope this helps! </h2>
8 0
3 years ago
Read 2 more answers
20
Nina [5.8K]

Answer:£22.50

Step-by-step explanation:

£15x7=£105

285-105= 180 : 8= £22.50p

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3 years ago
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