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3 years ago

if it was 113.5° in Amarillo and 95.7° in Phoenix how much hotter was it in Amarillo than it was in Phoenix

Mathematics

1 answer:

spin [16.1K]3 years ago

3 0

Pls give me brainliest and I think the answer is 2.78 degrees

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-2(4h+6)/-6+h for h=-5

satela [25.4K]

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2 years ago

A researcher is interested in estimating the mean weight of a semi trailer truck to determine the potential load capacity. She t

Kaylis [27]

Answer: 95% confidence interval = 20,000 ± 2.12 $\times$ $\frac{1500}{\sqrt{17} }$

( 19228.736 , 20771.263 ) OR ( 19229 , 20771 )

Step-by-step explanation:

Given :

Sample size(n) = 17

Sample mean = 20000

Sample standard deviation = 1,500

5% confidence

∴ $\frac{\alpha}{2}$ = 0.025

Degree of freedom ( $d_{f}$ ) = n-1 = 16

∵ Critical value at ( 0.025 , 16 ) = 2.12

∴ 95% confidence interval = mean ± $Z_{c}$ $\times$ $\frac{\sigma}{\sqrt{n} }$

Critical value at 95% confidence interval = 20,000 ± 2.12 $\times$ $\frac{1500}{\sqrt{17} }$

( 19228.736 , 20771.263 ) OR ( 19229 , 20771 )

3 0

3 years ago

1/2 - 2/9 = subtract. Simply if possible.

kozerog [31]

Answer:

$\frac{5}{18}$

Step-by-step explanation:

$\frac{1}{2} -\frac{2}{9} =\frac{9}{18} -\frac{4}{18}=\frac{5}{18}$

6 0

3 years ago

Read 2 more answers

Find the volume (inº) of this figure:

bonufazy [111]

Answer:

50.24

Step-by-step explanation:

you do 4²=16 then you do 16×3.14=50.24

and for further notice volume of a circle is radius to the second power times pi

8 0

3 years ago

What happens to the width of a confidence interval for a population mean if the level of confidence is increased without changin

natulia [17]

Answer: If the level of confidence is increased without changing the sample size then The margin of error will decrease because the critical value will decrease. The decreased margin of error will cause the confidence interval to be narrower.

where;

Margin of error = Critical value × Standard deviation

Here, it can be duly noted that Margin of error has a positive relation with critical value, i.e The margin of error will decrease because the critical value will decrease.

whereas;

The confidence interval is the value ± the margin of error.

Therefore, the decreased margin of error will cause the confidence interval to be narrower.

7 0

3 years ago

if it was 113.5° in Amarillo and 95.7° in Phoenix how much hotter was it in Amarillo than￼ it was in Phoenix￼

if it was 113.5° in Amarillo and 95.7° in Phoenix how much hotter was it in Amarillo than it was in Phoenix