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Murrr4er [49]
3 years ago
12

4 2/7 ÷3 4/5= how do you answer this?​

Mathematics
1 answer:
Pavel [41]3 years ago
6 0

is it 42 or 4 and 2 separate

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The American Bankers Association reported that, in a sample of 120 consumer purchases in France, 48 were made with cash, compare
tatuchka [14]

Answer:

Step-by-step explanation:

Hello!

You have the information for two variables

X₁: Number of consumer purchases in France that were made with cash, in a sample of 120.

n₁= 120 consumer purchases

x₁= 48 cash purchases

p'₁= 48/120= 0.4

X₂: Number of consumer purchases in the US that were made with cash, in a sample of 55.

n₂= 55 consumer purchases

x₂= 24 cash purchases

p'₂= 24/55= 0.4364

You need to construct a 90% CI for the difference of proportions p₁-p₂

Using the central limit theorem you can approximate the distribution of both sample proportions p'₁ and p'₂ to normal, so the statistic to use to estimate the difference of proportions is an approximate standard normal:

[(p'₁-p'₂) ± Z_{1-\alpha /2} * \sqrt{\frac{p'_1(1-p'_1)}{n_1} +\frac{p'_2(1-p'_2)}{n_2} }]

Z_{0.95}= 1.648

[(0.4-0.4364)±1.648 * \sqrt{\frac{0.4(1-0.4)}{120} +\frac{0.4364(1-0.4364)}{55} }]

[-0.1689;0.0961]

The interval has a negative bond, it is ok, keep in mind that even tough proportions take values between 0 and 1, in this case, the confidence interval estimates the difference between the two proportions. It is valid for one of the bonds or the two bonds of the CI for the difference between population proportions to be negative.

I hope this helps!

8 0
3 years ago
What is the difference in length between the girls with the shortest and longest hair
Evgen [1.6K]

Answer:

I think the difference is girls with longer hair look more attractive.

Step-by-step explanation:

Need the diagram....

6 0
2 years ago
On a scale drawing a building measures 4.5 cm tall is the scale of the drawing is 25 m per2 cm how tall is the actual building
ioda

Answer:

Actual height  of the building =112.5 meters

Step-by-step explanation:

Given

Scale of the drawing

1 cm = 25 meters

This means that any 1 cm line on the map represents a length of 25 meters in actual.

The height of the building on map = 4.5 cm

Actual height  of the building

= 4.5 * 25\\=112.5meters

7 0
3 years ago
An 5kg object is 6 meters what is the potential energy
AVprozaik [17]

Potential Energy of an object of 5kg which is 6 meters in height is 294 Joules.

Step-by-step explanation:

We are given:

Mass = m = 5 kg

Height = h= 6 meters

Potential Energy = ?

The formula used to find Potential Energy is:

Potential\,\,Energy =mgh

where m is mass, g is gravitational field and h is height

Putting the given values of mass and height, and g=9.8 m/s^2

Potential Energy = 5*9.8*6\\Potential Energy = 294 Joules

So, Potential Energy of an object of 5kg which is 6 meters in height is 294 Joules.

Keywords: Potential Energy

Learn more about Potential Energy at:

  • brainly.com/question/6013189
  • brainly.com/question/9251988
  • brainly.com/question/1198647

#learnwithBrainly

3 0
3 years ago
Can someone help me with the math problem -3 3/10+4 1/3=
ELEN [110]

Answer:

31/30

Step-by-step explanation:

-3 3/10+4 1/3

-3 9/30+4 10/30

31/30

6 0
3 years ago
Read 2 more answers
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