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tankabanditka [31]
3 years ago
7

4.1 homework question 3 fith grade

Mathematics
2 answers:
Dovator [93]3 years ago
7 0
What’s the question?
vichka [17]3 years ago
5 0

Answer: uhh provide a picture

Step-by-step explanation:

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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
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3 years ago
At Farmer Jones Market, bananas cost $.80 per pound. At Farmer Garcia's
e-lub [12.9K]

divide $4.50 by 5 .......

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3 years ago
A density graph for all of the possible times from 50 seconds to 300 seconds can be used to find which of the foll
Anarel [89]

Answer:

i m sorry

Step-by-step explanation:

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4 0
3 years ago
What is the value of x
borishaifa [10]
x^2=4^2+4^2\\
x^2=2\cdot16\\
x^2=32\\
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5 0
3 years ago
3m - 3(m+8) &gt; 3m<br><br><br> (Teacher didn't go over this hopefully I can get an explanation)
zhuklara [117]
Alrighty!

*Note the ">" sign is similar to the "=" sign.

3m - 3(3m + 8) > 3m
3m - 6m + 24 > 3m (distribute)
-3m + 24 > 3m (combine like terms)
24 > 6m (Compute/simplify)
8 > m

Makes sense?
8 0
3 years ago
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