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photoshop1234 [79]
2 years ago
6

Pleaseeee help asappppppp

Mathematics
1 answer:
lord [1]2 years ago
7 0

Answer:

ED = 12

<em><u>HOPE </u></em><em><u>THIS </u></em><em><u>HELP </u></em><em><u>YOU </u></em><em><u>,</u></em><em><u> </u></em><em><u>FOR </u></em><em><u>ANY </u></em><em><u>QUESTION </u></em><em><u>PLEASE </u></em><em><u>ASK </u></em><em><u>ME </u></em><em><u>.</u></em>

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a previous analysis of paper boxes showed that the standard deviation of the length is 9mm. What is the 98% confidence interval
il63 [147K]
We cannot calculate the confidence interval without the sample size.  However, for the second question, the sample size needed would be 49.

The formula we use is

n=(\frac{z_{\frac{\alpha}{2}}\times \sigma}{E})^2

To find the z-score:
Convert 98% to a decimal:  0.98
Subtract from 1:  1-0.98 = 0.02
Divide by 2:  0.02/2 = 0.01
Subtract from 1:  1-0.01 = 0.99

Using a z-table (http://www.z-table.com) we see that this value is closest to a z-score of 2.33.

Using the z-score, our standard deviation (9) and our margin of error (3), we have:
n=(\frac{2.33(9)}{3})^2=(6.99)^2=48.86\approx 49
6 0
3 years ago
Am I right Help Me Please
lbvjy [14]
Yes you are correct good job
3 0
3 years ago
5t^2 - 5.5 - 3.5t + 1.5t^2 +4t
RideAnS [48]
The answer is 6.5t2+0.5t−5.5 , it’s simplified
8 0
3 years ago
Read 2 more answers
Factor the binomial: 24mn + 32m *
8_murik_8 [283]
The greatest common multiple is 8m, so this means that you can factor it out to:

=8m(3n+4)
=(8m•3n)+(8m•4)
=(24mn)+(32m)
=24mn+32m

The answer is option 2.
4 0
3 years ago
The temperatures at 6:00 am one morning in four cities are given below.
Andre45 [30]

Answer:

-9

Step-by-step explanation:

8 0
2 years ago
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