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3 years ago

What's is the quotient of 2.56 = 0.4?

Mathematics

2 answers:

Alex_Xolod [135]3 years ago

5 0

Idk man shjsskbabjbzhksjsjssnn in h

HACTEHA [7]3 years ago

5 0

Answer:

6.4

Step-by-step explanation:

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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)

7 0

4 years ago

Which expression is an irrational number?A. 1/9 B.0.4 C. √15 D. √36

Daniel [21]

C is irrational because there is no definite square root for 15 whereas the square root of 36=6

3 0

4 years ago

Read 2 more answers

How do i solve this

Sophie [7]

Step-by-step explanation:

You're given that ΔUVW is similar to ΔYZW. The tricky part is identifying which sides in ΔUVW correspond to which sides in ΔYZW.

The triangles share point W, so visually rotate one triangle around W until the two triangles align. That way, you can see that UW and ZW correspond to each other, and VW and YW correspond to each other.

Now you can find the scale:

VW / YW = 5/12

And you can write a proportion to find x:

UW / ZW = VW / YW

x / 64 = 5 / 12

x = 26 ⅔

5 0

4 years ago

When a gas changes into a liquid, it is called ____________, and the speed of the molecules is ___________. A. condensation; inc

saul85 [17]

Answer:

condensation, decreases trust me is right

Step-by-step explanation:

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4 years ago

Monkey chunk cereal is normally $3.25 per box but today it is on sale for 25% what is the new price round to the nearest penny

ANEK [815]

Is it meaning the cereal is 25% off? If so then your answer would be $2.44

6 0

3 years ago