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3 years ago

What's N divided by 2

Mathematics

1 answer:

Lorico [155]3 years ago

3 0

Sorry, you must be missing an equation or something. If not then the answer is N/2.

Please leave a thanks.

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Identify the vertex for the given function. 2(x-1)^2 + 8

Lesechka [4]

Answer:

(1,8)

Step-by-step explanation:

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3 years ago

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Six nickel is what Percent of a dollar

oksano4ka [1.4K]

30%.
6 nickels equal 30 pennies, and 100 pennies make up a dollar.
30/100 = 30%.

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3 years ago

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A random sample of 10 parking meters in a beach community showed the following incomes for a day. Assume the incomes are normall

Vlad1618 [11]

Answer: (2.54,6.86)

Step-by-step explanation:

Given : A random sample of 10 parking meters in a beach community showed the following incomes for a day.

We assume the incomes are normally distributed.

Mean income : $\mu=\dfrac{\sum^{10}_{i=1}x_i}{n}=\dfrac{47}{10}=4.7$

Standard deviation : $\sigma=\sqrt{\dfrac{\sum^{10}_{i=1}{(x_i-\mu)^2}}{n}}$

$=\sqrt{\dfrac{(1.1)^2+(0.2)^2+(1.9)^2+(1.6)^2+(2.1)^2+(0.5)^2+(2.05)^2+(0.45)^2+(3.3)^2+(1.7)^2}{10}}$

$=\dfrac{30.265}{10}=3.0265$

The confidence interval for the population mean (for sample size <30) is given by :-

$\mu\ \pm t_{n-1, \alpha/2}\times\dfrac{\sigma}{\sqrt{n}}$

Given significance level : $\alpha=1-0.95=0.05$

Critical value : $t_{n-1,\alpha/2}=t_{9,0.025}=2.262$

We assume that the population is normally distributed.

Now, the 95% confidence interval for the true mean will be :-

$4.7\ \pm\ 2.262\times\dfrac{3.0265}{\sqrt{10}} \\\\\approx4.7\pm2.16=(4.7-2.16\ ,\ 4.7+2.16)=(2.54,\ 6.86)$

Hence, 95% confidence interval for the true mean= (2.54,6.86)

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3 years ago

The running trail in the local park is 2.826 miles long. If the park board were planning to extend the trail by 1.46 miles, what

eimsori [14]

Extend means to increase, add length to it, ADD.
2.826
+ 1.46
--------------
4.286

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3 years ago

"Harry had 500 pennies in a jar. He sorted the pennies into 25 different stacks. Each stack had the same number of pennies. How

nikdorinn [45]

Answer:

Step-by-step explanation:

To find out how many pennies were in each stack, you would have to divide 500 by 25. This gives you 20.

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