How is the frequency table with intervals similar to the frequency tables and How is it different?

Kimberly has 3.25 kilograms of flour in a container. She adds 45 grams of flour to the container. How many kilograms of flour do

monitta

Answer:

3.295 Kilograms of flour

Step-by-step explanation:

Kimberly has 3.25 kilograms of flour in a container. She adds 45 grams of flour to the container. How many kilograms of flour does she have now?

Kimberly has 3.25 kilograms of flour in a container.

She adds 45 grams of flour to the container.

We convert 45 grams to kilograms

1 gram = 0.001 kilogram

45 grams = x

Cross Multiply

x = 45 × 0.001 kilogram

x = 0.045 kilograms

The kilograms of flour she has now is calculated as:

Number of kilograms of flour in the container + Number of kilograms of Flour just added

= 3.25 kilograms + 0.045 kilograms

= 3.295 Kilograms of flour

4 0

3 years ago

The mean number of hours of part-time work per week for a sample of 317 teenagers is 29. If the margin of error for the populati

Shtirlitz [24]

Answer:

The degrees of freedom are given by:

$df=n-1=317-1=316$

And replaicing we got:

$29-2.1=26.9$

$29+2.1=31.1$

The 95% confidence interval would be between 26.9 and 31.1

Step-by-step explanation:

Information given

$\bar X= 29$ represent the sample mean

$\mu$ population mean

s represent the sample standard deviation

$ME= 2.1$ represent the margin of error

n represent the sample size

Solution

The confidence interval for the mean is given by the following formula:

$\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}$ (1)

And this formula is equivalent to:

$\bar X \pm ME[/te]xThe degrees of freedom are given by:[tex]df=n-1=317-1=316$

And replaicing we got:

$29-2.1=26.9$

$29+2.1=31.1$

The 95% confidence interval would be between 26.9 and 31.1

7 0

4 years ago

Find the area of the shape shown below. I NEED HELP NOWWWWWW

Varvara68 [4.7K]

Answer:

<h2> 12.5 units ${}^{2}$ </h2>

Step-by-step explanation:

Given figure : Trapezoid

Base sides,

a = 2.5

b = 7.5

Height ( h ) = 2.5

Now, finding the area:

$\frac{1}{2} (a + b) \times h$

Plug the values

$= \frac{1}{2 } \times (2.5 + 7.5) \times 2.5$

Calculate the sum

$= \frac{1}{2} \times 10 \times 2.5$

Reduce the numbers with G.C.F 2

$= 5 \times 2.5$

Calculate the product

$12.5 \: \: {units}^{2}$

Hope this helps...

Best regards!

8 0

3 years ago

20 POINTS! The following graph shows the amount of money Jonah earns when he babysits for the family who lives next door. Based

katrin2010 [14]

Answer:

The equation e = 4 h can be used to describe this situation.

Jonah earns $20 to babysit for 5 hours.

Step-by-step explanation:

When Jonah babysits one hour, he earns $7.50.

looking at the graph we see at 1 hour he earns 4 dollars false

The equation e = 4 h can be used to describe this situation.

The slope is 4 so y = 4x e = 4h would also work true

Jonah earns $20 to babysit for 5 hours.

Using our equation from above

e = 4*5 = 20 true

The number of hours Jonah works depends on how much he earns.

This would be false

The dependent variable is on the y axis. The amount he earns depends on how much he works

3 0

3 years ago

What is "twenty-six thousandths" in decimal form?

aniked [119]

Answer:

twenty-six thousandths in decimal form is "0.0026"

Hope this helped

Step-by-step explanation:

7 0

4 years ago

How is the frequency table with intervals similar to the frequency tables and How is it different?​

How is the frequency table with intervals similar to the frequency tables and How is it different?