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Alecsey [184]
3 years ago
7

A triangle has sides measuring 2 inches and 7 inches. If x represents the

Mathematics
1 answer:
xz_007 [3.2K]3 years ago
3 0

Answer:

its d.

Step-by-step explanation:

the other guy is wrong

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Suppose we take a random sample of 41 state college students. Then we measure the length of their right foot in centimeters. We
Debora [2.8K]

Answer:

ME = \frac{25.09-21.01}{2}= 1.69

The general formula for the margin of error is given by:

ME= t_{\alpha/2} \frac{s}{\sqrt{n}}

And for this case the width is:

Width= 2*t_{\alpha/2} \frac{s}{\sqrt{n}}

And if we decrease the confidence level from 95% to 90% then the critical value t_{\alpha/2} would decrease and in effect the width for this new confidence interval decreases.

As confidence level decreases, the interval width decreases

Step-by-step explanation:

For this cae we know that the sample size selected is n =41

And we have a confidence interva for the true mean of foot length for students at a college selected.

The confidence interval is given by this formula:

\bar X \pm t_{\alpha/2} \frac{s}{\sqrt{n}}

And for this case the 95% confidence interval is given by: (21.71,25.09)

A point of etimate for the true mean is given by:

\bar X = \frac{21.71+25.09}{2}= 23.4

And the margin of error would be:

ME = \frac{25.09-21.01}{2}= 1.69

The general formula for the margin of error is given by:

ME= t_{\alpha/2} \frac{s}{\sqrt{n}}

And for this case the width is:

Width= 2*t_{\alpha/2} \frac{s}{\sqrt{n}}

And if we decrease the confidence level from 95% to 90% then the critical value t_{\alpha/2} would decrease and in effect the width for this new confidence interval decreases.

As confidence level decreases, the interval width decreases

3 0
3 years ago
The enrollment at East Valley High School over a six-year period is displayed in the scatterplot.
Ierofanga [76]
D 100% corect took my test $$$$$$$$$$$$$$
4 0
3 years ago
Read 2 more answers
What is 1/3x+4=6?<br> Also show steps plz if you can...
Sever21 [200]

Answer:

x = 6

Step-by-step explanation:

6 0
3 years ago
HELP ME H PLZZZZZ??????
Karo-lina-s [1.5K]

Answer:

Hello :)

Step-by-step explanation:

1. a

2. None

3. c

4. b

Hope this helps :)

8 0
2 years ago
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josiah is ready to purchase a new watch. it is regularly priced at $480.77. the sale price is $380.54. what is the mark down on
dem82 [27]
20.8478066 (or 20.85%)
you do 480.77 minus 380.54 and it comes out to 100.23 and then you do 100.23/480=x/100 (discount/original=percent/100) and you multiply 100.23 by 100 and it comes to 10023 and you do 10023 divided by 480.77 and it comes out to 20.8478066 or 20.85%
6 0
3 years ago
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